A&p Of The Urinary System
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The urinary system contains kidneys, ureters, bladder, and urethra. The principal purpose of the urinary system is to eliminate waste from the body. It also controls blood volume and blood pressure, regulates electrolytes and metabolites, and controls blood pH. If you need to comprehend more regarding the urinary system, try this quiz.
- 1.
The left kidney lies lower than the right due to the position of the liver. ***
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
The left kidney does not lie lower than the right due to the position of the liver. In fact, the left kidney is slightly higher than the right kidney. The liver is located on the right side of the body, and it does not affect the position of the kidneys.Rate this question:
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- 2.
What is a kidney composed of? (More than 1 answer) ***
- A.
Outer cortex
- B.
Ureter
- C.
Central medulla
- D.
Internal calices
- E.
Pelvis
Correct Answer(s)
A. Outer cortex
C. Central medulla
D. Internal calices
E. PelvisExplanation
The kidney is composed of several parts, including the outer cortex, central medulla, internal calices, and pelvis. The outer cortex is the outermost layer of the kidney, while the central medulla is the inner part. The internal calices are small tubes that collect urine from the medulla and transport it to the pelvis. The pelvis is the funnel-shaped structure that collects urine from the calices and transports it to the ureter.Rate this question:
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- 3.
Convex portion (renal hilum) of the kidney is __________ the _____________, artery, and veins exit the _______________.
- A.
Proximal to; rib; ureter
- B.
The point at which; renal pelvis; perenchyma
- C.
The point at which;urine; ureter
- D.
The point at which; renal pelvis; outer cortex
Correct Answer
B. The point at which; renal pelvis; perenchymaExplanation
The correct answer is "the point at which; renal pelvis; perenchyma." The renal hilum is the concave portion of the kidney where the renal pelvis, artery, and veins exit the organ. The renal pelvis is the funnel-shaped structure that collects urine from the kidney and transports it to the ureter. The perenchyma refers to the functional tissue of the kidney, which includes the renal cortex and renal medulla. Therefore, the renal hilum is the point at which the renal pelvis is located within the perenchyma of the kidney.Rate this question:
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- 4.
The kidney lies in the retroperitoneal space. ***
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The retroperitoneal space is located behind the abdominal cavity, where the kidneys are positioned. This anatomical location allows the kidneys to be protected and supported by surrounding structures such as muscles and fat. Therefore, it is correct to say that the kidney lies in the retroperitoneal space.Rate this question:
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- 5.
The kidney is situated approximately at a 90-angle from the spine adjacent to what levels of the spinal column?
- A.
L1 or L2 to C4
- B.
T8 to L1 or L2
- C.
T12 to L2 or L3
- D.
T12 to C1 or C2
Correct Answer
C. T12 to L2 or L3Explanation
The correct answer is T12 to L2 or L3. The kidney is situated at a 90-angle from the spine, and it is adjacent to the levels of the spinal column between T12 and L2 or L3.Rate this question:
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- 6.
What surrounds the medulla forming columns and lobules that surround and fill the space between the pyramids? ***
- A.
Renal pelvis
- B.
Parenchyma
- C.
Cortex
- D.
Calices
Correct Answer
C. CortexExplanation
In a lot more words than A&Peers need too knowRate this question:
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- 7.
What are projected portions between the papillae and fornices called?
- A.
Columns of Berlin
- B.
Columns of Burton
- C.
Columns of Bromen
- D.
Columns of Bertin
Correct Answer
D. Columns of BertinExplanation
Columns of Bertin are projected portions between the papillae and fornices.Rate this question:
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- 8.
What does the cortex surround? ***
- A.
The renal pelvis
- B.
The bladder
- C.
The medulla of the kidney
- D.
The medulla of the bladder
Correct Answer
C. The medulla of the kidneyExplanation
The cortex surrounds the medulla of the kidney. The kidney is composed of an outer layer called the cortex and an inner region called the medulla. The cortex contains the glomeruli and the convoluted tubules, while the medulla contains the renal pyramids and the collecting ducts. The cortex surrounds and protects the medulla, playing a crucial role in the filtration and reabsorption of waste products and water in the kidney.Rate this question:
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- 9.
What are pale conical shape structures called? ***
- A.
Pyramids
- B.
Cylinders
- C.
Columns
- D.
Bob
Correct Answer
A. PyramidsExplanation
Pale conical shape structures are called pyramids.Rate this question:
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- 10.
How many minor calyces are there in each kidney? ***
- A.
4-13
- B.
2-3
- C.
8-18
- D.
10-12
Correct Answer
C. 8-18Explanation
pyramids as well.Rate this question:
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- 11.
What drains into the minor calices at the tip of the papillae?
- A.
Nephron
- B.
Renal Pelvis
- C.
Medulla
- D.
Ureter
Correct Answer
C. MedullaExplanation
pyramids/papillary ductsRate this question:
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- 12.
(calices) Tips are indented by the projecting pyramids.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because calices, which are the small cup-shaped structures in the kidney that collect urine, are indeed indented by the projecting pyramids. The pyramids, also known as renal pyramids, are triangular structures in the kidney that contain collecting ducts and loop of Henle. These pyramids project into the calices, creating an indented appearance. Therefore, the statement is correct.Rate this question:
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- 13.
Minor calices unite to form ______ major calices that join and form the renal pelvis. ***
- A.
4-13
- B.
2-3
- C.
8-18
- D.
10-12
Correct Answer
B. 2-3Explanation
The minor calices in the kidney combine to form 2-3 major calices. These major calices then join together to form the renal pelvis.Rate this question:
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- 14.
A funnel-shape structure that originates at the major calices and tapers into the ureter. ***
- A.
Nephron
- B.
Renal Pelvis
- C.
Cortexes
- D.
Medulla
Correct Answer
B. Renal PelvisExplanation
The correct answer is Renal Pelvis. The renal pelvis is a funnel-shaped structure that collects urine from the major calices and transports it to the ureter. It is located at the center of the kidney and serves as a reservoir for urine before it is expelled from the body.Rate this question:
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- 15.
Renal Pelvis drains urine from the _________ to the _________. ***
- A.
Kidney; ureter
- B.
Kidney; urethra
- C.
Bladder; ureter
- D.
Bladder; urethra
Correct Answer
A. Kidney; ureterExplanation
The renal pelvis is a funnel-shaped structure in the kidney that collects urine from the kidney and funnels it into the ureter. The ureter then carries the urine from the kidney to the bladder. Therefore, the correct answer is "kidney; ureter."Rate this question:
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- 16.
What is the functional unit of the kidney? ***
- A.
Medulla
- B.
Calices
- C.
Nephron
- D.
Ureter
Correct Answer
C. NepHronExplanation
The functional unit of the kidney is the nephron. Nephrons are responsible for filtering waste products and excess fluids from the blood, reabsorbing essential substances, and producing urine. Each kidney contains millions of nephrons, which consist of a glomerulus, a tubule, and associated blood vessels. The nephron is essential for maintaining the body's fluid balance, regulating electrolyte levels, and removing waste products through urine formation. The other options, such as medulla, calices, and ureter, are not the functional units of the kidney but rather different structures or components within the kidney.Rate this question:
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- 17.
A nephron is composed of a glomerulus, Bowman's capsule, proximal convoluted tubule, loop of Henle, distal convoluted tubule, renal pelvis, and collecting ducts. ***
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
No renal pelvisRate this question:
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- 18.
Approximately how many nephrons does each kidney have? ***
- A.
1 thousand
- B.
1 million
- C.
10 million
- D.
1.1 billion
Correct Answer
B. 1 millionExplanation
Each kidney has approximately 1 million nephrons. Nephrons are the functional units of the kidneys responsible for filtering waste products and excess water from the blood to produce urine. The large number of nephrons in each kidney allows for efficient filtration and maintenance of proper fluid balance in the body.Rate this question:
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- 19.
Excretory functions are contained largely within the cortex.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
(AKA nephrons)Rate this question:
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- 20.
Excretory functions consist of the ________________.
- A.
Proximal convoluted tubule
- B.
Glomerular filtration
- C.
Ureteropelvic Junction
- D.
Renal corpuscle
Correct Answer
D. Renal corpuscleExplanation
The renal corpuscle is part of the excretory system and is responsible for the initial filtration of blood in the kidneys. It consists of the glomerulus, which filters waste products and excess fluids from the blood, and the Bowman's capsule, which surrounds the glomerulus and collects the filtered substances. The proximal convoluted tubule, ureteropelvic junction, and glomerular filtration are all components of the excretory system, but they are not the specific functions that make up the excretory functions.Rate this question:
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- 21.
What is the first step in the filtration of blood for urine formation? ***
- A.
Bladder
- B.
Renal corpuscle
- C.
Proximal convoluted tubule
- D.
Glomerulus
Correct Answer
D. GlomerulusExplanation
The first step in the filtration of blood for urine formation is the glomerulus. The glomerulus is a network of capillaries located in the renal corpuscle. It is responsible for filtering waste products, toxins, and excess water from the blood, allowing only essential substances like nutrients and ions to pass through. The filtered blood then moves on to the proximal convoluted tubule for further processing and reabsorption. The bladder is not involved in the initial filtration process.Rate this question:
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- 22.
Where does the Glomerulus lay?
- A.
Bladder
- B.
Proximal convoluted tubule
- C.
Bowman's capsule
- D.
Nephron
Correct Answer
C. Bowman's capsuleExplanation
The correct answer is Bowman's capsule. The glomerulus is a network of tiny blood vessels located within the Bowman's capsule in the nephron. It is responsible for the initial filtration of blood in the kidney. The bladder, proximal convoluted tubule, and nephron are all parts of the urinary system, but they are not specifically where the glomerulus is located.Rate this question:
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- 23.
What are three basic processes of urine production?
- A.
Glomerular filtration; Tubular reabsorption; tubular secretion
- B.
Proximal convolution, Glomular filtration, tubular secretion
- C.
Tubular reabsorption, Proximal convolution; tubular secretion
- D.
Proximal convolution; Secretary filtration, tubular secretion
Correct Answer
A. Glomerular filtration; Tubular reabsorption; tubular secretionExplanation
The correct answer is Glomerular filtration; Tubular reabsorption; tubular secretion. These three processes are the main steps involved in urine production in the kidneys. Glomerular filtration occurs in the glomerulus, where blood is filtered to form a fluid called filtrate. Tubular reabsorption takes place in the renal tubules, where useful substances like water, glucose, and ions are reabsorbed back into the bloodstream. Tubular secretion involves the transfer of waste products, drugs, and excess ions from the bloodstream into the renal tubules to be eliminated in urine.Rate this question:
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- 24.
During glomerulus, reabsorption occurs for most fluids, such as ______________.More than one answer
- A.
Sodium,
- B.
Bicarbonate
- C.
Potassium
- D.
Glucose
- E.
Water
Correct Answer(s)
A. Sodium,
B. Bicarbonate
C. Potassium
E. WaterExplanation
During glomerulus, reabsorption occurs for most fluids, including sodium, bicarbonate, potassium, and water. This process takes place in the renal tubules, where these substances are reabsorbed back into the bloodstream from the filtrate. Sodium reabsorption is crucial for maintaining electrolyte balance, bicarbonate reabsorption helps regulate pH levels, potassium reabsorption is important for cellular function, and water reabsorption helps maintain proper hydration levels.Rate this question:
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- 25.
What encases the glomerulus? ***
- A.
Proximal convoluted tubule
- B.
Bowman's capsule
- C.
Distal convoluted tubule
- D.
Loop of Henle
Correct Answer
B. Bowman's capsuleExplanation
Bowman's capsule encases the glomerulus. The glomerulus is a network of tiny blood vessels located in the kidney that filters waste products and excess water from the blood. Bowman's capsule surrounds the glomerulus and acts as a protective barrier. It collects the filtered fluid, known as the glomerular filtrate, and transports it to the proximal convoluted tubule for further processing in the kidney. The other options listed, such as the proximal convoluted tubule, distal convoluted tubule, and loop of Henle, are all different parts of the renal tubule system and are involved in the reabsorption and secretion of substances in the urine, but they do not directly encase the glomerulus.Rate this question:
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- 26.
The proximal convoluted tubule reabsorbs approximately how much of the water and solutes?
- A.
100%
- B.
99%
- C.
87%
- D.
64%
Correct Answer
C. 87%Explanation
The proximal convoluted tubule is responsible for reabsorbing water and solutes from the filtrate back into the bloodstream. This process is essential for maintaining the body's water and electrolyte balance. The correct answer of 87% indicates that the proximal convoluted tubule reabsorbs a significant amount of water and solutes, but not all of it. This allows for the proper excretion of waste products and helps regulate the concentration of substances in the body.Rate this question:
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- 27.
In a healthy individual, the proximal convoluted tubule reabsorbs approximately how much of the glucose? ***
- A.
100%
- B.
99%
- C.
87%
- D.
64%
Correct Answer
A. 100%Explanation
The proximal convoluted tubule is responsible for reabsorbing glucose in the kidneys. In a healthy individual, this reabsorption is highly efficient, and almost all of the filtered glucose is reabsorbed. Therefore, the correct answer is 100%.Rate this question:
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- 28.
The proximal convoluted tubule reabsorbs approximately how much of the amino acids?
- A.
0%
- B.
99%
- C.
87%
- D.
64%
Correct Answer
B. 99%Explanation
protiens consist of amino acidsRate this question:
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- 29.
What does the proximal convoluted tubule resist reabsorbing?***
- A.
Glucose
- B.
Amino acids
- C.
Nitrogeneous waste
Correct Answer
C. Nitrogeneous wasteExplanation
The proximal convoluted tubule in the kidney resists reabsorbing nitrogenous waste. This waste includes substances like urea and creatinine, which are byproducts of protein metabolism. The tubule plays a crucial role in filtering waste products from the blood and excreting them in urine. While it reabsorbs essential substances like glucose and amino acids, it actively resists reabsorbing nitrogenous waste to ensure their elimination from the body. This helps maintain the body's overall nitrogen balance and prevent accumulation of harmful waste products.Rate this question:
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- 30.
What is the mechanism for further reabsorption of water that effects the concentration of the urine? ***
- A.
Distal convoluted tubule
- B.
Minor calyx
- C.
Proximal convoluted tubule
- D.
Loop of Henle
Correct Answer
D. Loop of HenleExplanation
nephron loopRate this question:
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- 31.
In the decending limb of the Loop of Henle, _______ is/are actively secreted as ______ is/are passively reabsorbed. ***
- A.
Saccarin ions, water
- B.
Sodium ions, water
- C.
Phosphoric waste, water
- D.
Phenalphaline ions, water
Correct Answer
B. Sodium ions, waterExplanation
In the descending limb of the Loop of Henle, sodium ions are actively secreted while water is passively reabsorbed. This means that the body actively transports sodium ions out of the tubule and into the surrounding tissue, while water moves out of the tubule through osmosis. This process helps to concentrate the urine and maintain the body's water balance.Rate this question:
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- 32.
The descending limb of the loop disallows the reabsorption of water. ***
- A.
True
- B.
False
Correct Answer
B. FalseExplanation
ascending limbRate this question:
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- 33.
If sodium concentration is too ________, the bottom of the loop of Henle will selectively reabsorb water causing urine concentration.
- A.
High
- B.
Low
Correct Answer
A. HighExplanation
If the sodium concentration is too high, it means there is an excess of sodium ions in the body. In this case, the bottom of the loop of Henle, which is a part of the kidney responsible for reabsorption of water and electrolytes, will selectively reabsorb water. This reabsorption of water will result in a higher concentration of solutes in the urine, leading to urine concentration.Rate this question:
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- 34.
What hormone influences the permeability of the tubular cells to water? ***
- A.
Antidiurectic
- B.
Excretory
- C.
Testosterone
- D.
Adrenal
Correct Answer
A. AntidiurecticExplanation
The hormone that influences the permeability of the tubular cells to water is antidiuretic hormone. This hormone, also known as vasopressin, is released by the pituitary gland and acts on the kidneys to increase water reabsorption. By increasing the permeability of the tubular cells, antidiuretic hormone allows more water to be reabsorbed from the urine back into the bloodstream, resulting in concentrated urine and preventing excessive water loss from the body.Rate this question:
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- 35.
Distal convoluted tubule:As fluid flows along the ____________ and through the collecting duct, the tubule and duct cells secrete other materials such as waste, drugs, and ________ into the fluid.
- A.
Fallopian tubules; sodium
- B.
Renal tubule; sodium
- C.
Fallopian tubules; excess ions
- D.
Renal tubule; excess ions
Correct Answer
D. Renal tubule; excess ionsExplanation
As fluid flows along the renal tubule and through the collecting duct, the tubule and duct cells secrete other materials such as waste, drugs, and excess ions into the fluid.Rate this question:
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- 36.
What consists of the collecting tubule which empties its contents through the tip of a pyramid into the minor calyx?
- A.
Distal convoluted tubule
- B.
Excretory function
- C.
Secretory function
- D.
Arterial supply
Correct Answer
B. Excretory functionExplanation
The correct answer is "Excretory function". The collecting tubule is responsible for the final concentration and excretion of urine. It collects urine from the distal convoluted tubules and empties its contents through the tip of a pyramid into the minor calyx. The other options, such as distal convoluted tubule, secretory function, and arterial supply, are not directly related to the emptying of urine and excretion.Rate this question:
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- 37.
What is arterial supply?
- A.
Paired with the arteries, but any of them will drain the entire kidney if the others are tied off.
- B.
One renal artery, a branch of the aorta, enters the hilum of the kidney between the pelvis, and the renal vein.
- C.
Maintain the internal homeostatic environment of the body by the regulation of the hydrogen ion.
- D.
Regulates electrolyte concentrations, controls blood volume, and regulates blood pressure.
Correct Answer
B. One renal artery, a branch of the aorta, enters the hilum of the kidney between the pelvis, and the renal vein.Explanation
The arterial supply refers to the blood vessels that deliver oxygenated blood to the kidneys. In this case, the correct answer states that the renal artery, which is a branch of the aorta, enters the hilum of the kidney between the pelvis and the renal vein. This is accurate because the renal artery is responsible for supplying blood to the kidneys, allowing them to filter waste products and maintain the body's internal homeostatic environment.Rate this question:
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- 38.
Arterial supply divides into anterior and posterior branches.
- A.
True
- B.
False
Correct Answer
A. TrueExplanation
The statement is true because the arterial supply of the body does indeed divide into anterior and posterior branches. This division occurs in various regions of the body, such as the brain, where the anterior and posterior cerebral arteries supply blood to different areas. In other regions, such as the upper and lower limbs, the arterial supply also divides into anterior and posterior branches to ensure proper blood flow to different parts of the body. Therefore, the statement is correct.Rate this question:
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- 39.
What is venous supply?
- A.
Paired with the arteries, but any of them will drain the entire kidney if the others are tied off.
- B.
One renal artery, a branch of the aorta, enters the hilum of the kidney between the pelvis, and the renal vein.
- C.
Maintain the internal homeostatic environment of the body by the regulation of the hydrogen ion.
- D.
Regulates electrolyte concentrations, controls blood volume, and regulates blood pressure.
Correct Answer
A. Paired with the arteries, but any of them will drain the entire kidney if the others are tied off.Explanation
The venous supply refers to the system of veins that carry deoxygenated blood from the organs and tissues back to the heart. In the context of the given options, the correct answer suggests that the venous supply of the kidney is paired with the arteries. This means that there are corresponding veins for the renal arteries that carry blood away from the kidney. Additionally, it states that any of these veins can drain the entire kidney if the others are tied off, indicating that there is redundancy in the venous drainage system of the kidney.Rate this question:
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- 40.
The kidney maintains the internal homeostatic environment of the body by regulation of the ______.
- A.
Amino acids
- B.
Hydrogen ion
- C.
Sodium concentration
- D.
Sodium ion
Correct Answer
B. Hydrogen ionExplanation
pHRate this question:
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- 41.
What excretes unneeded end products of metabolic function, including creatinine, urea, uric acid, nitrates, and phenol? (best answer) ***
- A.
Kidney
- B.
Renal pelvis
- C.
Gall bladder
- D.
Ureters
Correct Answer
A. KidneyExplanation
please say kidneyRate this question:
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- 42.
The kidney provides long term regulation of acid-based balance by selective _________ or __________ of hydrogen ions.
- A.
Use, disuse
- B.
Excretion, secretion
- C.
Excretion, reabsorption
- D.
Use, excretion
Correct Answer
C. Excretion, reabsorptionExplanation
The kidney provides long-term regulation of acid-based balance by selectively excreting or reabsorbing hydrogen ions. This means that the kidney can remove excess hydrogen ions from the body through excretion or retain and reabsorb them when needed to maintain the acid-base balance. This process helps to regulate the pH of the blood and maintain homeostasis in the body.Rate this question:
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- 43.
The kidney regulates __________, controls ____________, and regulates__________.
- A.
Blood volume, electrolyte concentrations, blood pressure
- B.
Electrolyte concentrations, blood volume, blood pressure
Correct Answer
B. Electrolyte concentrations, blood volume, blood pressureExplanation
The kidney plays a crucial role in regulating electrolyte concentrations, blood volume, and blood pressure. It helps maintain the balance of electrolytes such as sodium, potassium, and calcium in the body, which is essential for proper nerve and muscle function. The kidney also controls blood volume by adjusting the amount of water reabsorbed or excreted, which in turn affects blood pressure. By regulating these factors, the kidney ensures overall fluid balance and helps maintain homeostasis in the body.Rate this question:
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- 44.
A funnel-shape structure that originates at the major calices and tapers into the ureter ***
- A.
Renal pelvis
- B.
Ureters
- C.
Bladder
- D.
Urethra
Correct Answer
A. Renal pelvisExplanation
The renal pelvis is a funnel-shaped structure that is located at the top of the ureter. It collects urine from the major calices, which are small cup-like structures that collect urine from the kidney's minor calices. The renal pelvis then tapers down into the ureter, which carries urine from the kidney to the bladder. This explanation describes the correct answer without explicitly stating it.Rate this question:
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- 45.
Narrow muscular tubes that originate at the lower portion of the renal pelvis, and terminate in the bladder wall
- A.
Renal pelvis
- B.
Urethra
- C.
Bladder
- D.
Ureters
Correct Answer
D. UretersExplanation
The correct answer is ureters. The given description states that these narrow muscular tubes originate at the lower portion of the renal pelvis, which is the area where urine collects in the kidney, and terminate in the bladder wall. The ureters are responsible for carrying urine from the kidneys to the bladder.Rate this question:
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- 46.
Transport urine from kidney to the bladder before expulsion from the body by peristalsis. ***
- A.
Renal pelvis
- B.
Urethra
- C.
Ureters
- D.
Bladder
Correct Answer
C. UretersExplanation
The ureters are responsible for transporting urine from the kidneys to the bladder. They do this by using peristalsis, which is a series of wave-like muscle contractions that push the urine along the ureters. Once the urine reaches the bladder, it can be stored until it is expelled from the body. Therefore, the correct answer is ureters.Rate this question:
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- 47.
Reservoir for urine ***
- A.
Renal pelvis
- B.
Urethra
- C.
Ureters
- D.
Bladder
Correct Answer
D. BladderExplanation
The bladder is the correct answer because it is the organ that serves as a reservoir for urine. It collects and stores urine that is produced by the kidneys before it is eliminated from the body through the urethra. The renal pelvis, ureters, and urethra are also involved in the urinary system, but they do not specifically function as a reservoir for urine like the bladder does.Rate this question:
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- 48.
Hollow, muscular organ that lies in the true pelvis. ***
- A.
Renal pelvis
- B.
Kidney
- C.
Ureters
- D.
Bladder
Correct Answer
D. BladderExplanation
The correct answer is bladder because it is a hollow, muscular organ that lies in the true pelvis. The bladder is responsible for storing urine before it is eliminated from the body. It is located in the lower abdomen and is connected to the kidneys through the ureters.Rate this question:
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- 49.
What drains urine from the kidney into the ureter?
- A.
Renal pelvis
- B.
Bladder
- C.
Ureter
- D.
Urethra
Correct Answer
A. Renal pelvisExplanation
The renal pelvis is a structure in the kidney that collects urine before it is transported to the ureter. It is located at the top of the ureter and serves as a funnel-like structure that drains urine from the kidney. The urine then passes through the ureter, which is a tube that connects the kidney to the bladder. The bladder stores the urine until it is ready to be eliminated through the urethra. Therefore, the renal pelvis is responsible for draining urine from the kidney into the ureter.Rate this question:
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- 50.
The ureters are ______ to _________ long and follow a smooth S curve.
- A.
24-30 inches
- B.
10-20 inches
- C.
24-30 cm
- D.
10-20 cm
Correct Answer
C. 24-30 cmExplanation
The ureters are tubes that connect the kidneys to the bladder and carry urine. They are approximately 24-30 cm long and have a smooth S-shaped curve.Rate this question:
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