1.
The Urinary System consists of : - Kidneys, Ureters, Bladder, Urethra
Correct Answer
A. True
Explanation
The given statement is true. The urinary system consists of kidneys, ureters, bladder, and urethra. These organs work together to remove waste products and excess water from the body in the form of urine. The kidneys filter the blood, removing waste and producing urine. The urine then travels through the ureters to the bladder, where it is stored until it is eliminated through the urethra. Therefore, the given statement is correct.
2.
The kidneys maintain fluid balanced by:- (Select Three)
Correct Answer(s)
A. Maintaining blood pressure
B. Maintaining the alkalinity of the blood
D. Excreting waste products and urea
Explanation
The kidneys play a crucial role in maintaining fluid balance in the body. They help regulate blood pressure by adjusting the volume of blood and the concentration of electrolytes in the blood. The kidneys also help maintain the alkalinity of the blood by regulating the levels of acids and bases in the body. Additionally, the kidneys excrete waste products and urea, which helps remove toxins and maintain the overall balance of substances in the blood.
3.
Processes are employed by the kidneys in the production of urine :- (Select Three)
Correct Answer(s)
A. Filtration
B. Secretion
C. Absorption
Explanation
The kidneys play a crucial role in the production of urine. Filtration is the process by which blood is filtered in the kidneys to remove waste products and excess water, which then forms urine. Secretion is the process by which certain substances, such as drugs or toxins, are actively transported from the blood into the urine. Absorption, on the other hand, is the process by which certain substances, such as water and essential nutrients, are reabsorbed from the urine back into the bloodstream. Pressure, although important for various physiological processes, is not directly involved in the production of urine.
4.
Urine consists of 94% water, 3% urea and 3% mineral salts - mainly sodium chloride.
Correct Answer
B. False
Explanation
Urine does not consist of 94% water, 3% urea, and 3% mineral salts. The composition of urine can vary depending on factors such as hydration levels and diet, but on average, it is approximately 95% water. The remaining 5% includes various waste products such as urea, creatinine, and mineral salts. Therefore, the statement provided is false.
5.
The bladder lies in the pelvis, when empty, but when full, rises about the pubis and lies partially in the abdomen, and in the female it lies in front of the uterus.
Correct Answer
A. True
Explanation
The statement is true because the bladder is located in the pelvis when it is empty. However, when it becomes full, it rises above the pubis and partially extends into the abdomen. In females, the bladder is positioned in front of the uterus.
6.
The structural and functional unit of Kidney is?
Correct Answer
A. NepHron
Explanation
The correct answer is Nephron. The nephron is the structural and functional unit of the kidney. It is responsible for filtering the blood and producing urine. Each kidney contains millions of nephrons, which consist of a glomerulus and a tubule. The glomerulus filters waste products and excess water from the blood, while the tubule reabsorbs necessary substances and eliminates waste products. Together, these processes help maintain the balance of fluids and electrolytes in the body.
7.
The human kedineys are
Correct Answer
A. Beans shaped
Explanation
The correct answer is "Beans shaped" because the kidneys in the human body are bean-shaped organs. They are located on either side of the spine, just below the rib cage. The bean shape allows the kidneys to efficiently filter waste products and excess fluids from the blood, producing urine.