Heart Anatomy Exam: GK Quiz!
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- 1.
The single vessel that drains blood from the digestive tract organs to the liver is the ________.
- A.
Hepatic portal vein
- B.
Hepatic vein
- C.
Inferior vena cava
- D.
Renal vein
Correct Answer
A. Hepatic portal veinExplanation
The hepatic portal vein is the correct answer because it is the vessel that carries blood from the digestive tract organs, such as the stomach, intestines, and spleen, to the liver. This blood is rich in nutrients and other substances that have been absorbed from the digestive system. The liver then processes and filters this blood before it is returned to the general circulation via the hepatic vein. The inferior vena cava is a large vein that carries deoxygenated blood from the lower body back to the heart, while the renal vein carries blood from the kidneys.Rate this question:
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- 2.
Which of the following is a blood clotting disorder?
- A.
Polycthemia
- B.
Hemophilia
- C.
Anemia
- D.
Leukocytosis
- E.
Leukopenia
Correct Answer
B. HemopHiliaExplanation
Hemophilia is a blood clotting disorder characterized by the inability of the blood to clot properly. This is due to a deficiency or absence of certain clotting factors in the blood. As a result, individuals with hemophilia experience prolonged bleeding and are at a higher risk of excessive bleeding from even minor injuries or surgeries. Polycthemia, anemia, leukocytosis, and leukopenia are not blood clotting disorders but rather conditions that involve abnormalities in the number or function of red blood cells or white blood cells.Rate this question:
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- 3.
The process by which white blood cells travel through the wall of blood vessels is termed ________.
- A.
Diapedesis
- B.
Chemotaxis
- C.
Diffusion
- D.
Filtration
Correct Answer
A. DiapedesisExplanation
Diapedesis refers to the process by which white blood cells move through the walls of blood vessels and into the surrounding tissues. This allows the white blood cells to reach the site of infection or injury and initiate an immune response. Chemotaxis, diffusion, and filtration are not specifically related to the movement of white blood cells through blood vessel walls.Rate this question:
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- 4.
The sinoatrial node, located in the right atrium of the heart, is often called the ________.
- A.
Pacemaker
- B.
Atrioventricular (AV) bundle (bundle of his)
- C.
Pericardial cavity
- D.
Auricle
Correct Answer
A. PacemakerExplanation
The correct answer is pacemaker. The sinoatrial node, also known as the pacemaker of the heart, is responsible for initiating the electrical impulses that regulate the heart's rhythm. It is located in the right atrium and acts as the natural pacemaker for the heart, setting the pace for the rest of the cardiac conduction system.Rate this question:
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- 5.
The mitral valve is normally closed ________.
- A.
By the movement of blood from the atrium to the ventricle
- B.
When the ventricle is in diastole
- C.
When the ventricle is in systole
- D.
When the ventricle is relaxed
- E.
When the atrium is contracting
Correct Answer
C. When the ventricle is in systoleExplanation
The mitral valve is normally closed when the ventricle is in systole. During systole, the ventricle contracts and pumps blood out of the heart. The closure of the mitral valve prevents the backflow of blood from the ventricle back into the atrium. This ensures that blood flows in one direction, from the atrium to the ventricle and then out to the rest of the body.Rate this question:
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- 6.
Which of the following arteries is the first branch of the abdominal aorta?
- A.
Hepatic artery
- B.
Splenic artery
- C.
Superior mesenteric artery
- D.
Femoral artery
- E.
Celiac artery
Correct Answer
E. Celiac arteryExplanation
The celiac artery is the correct answer because it is the first branch of the abdominal aorta. It arises just below the diaphragm and supplies blood to the stomach, liver, spleen, and other organs in the upper abdomen. The hepatic artery, splenic artery, superior mesenteric artery, and femoral artery are also branches of the abdominal aorta, but they are not the first branch.Rate this question:
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- 7.
The electrocardiogram (ECG) wave that results from the firing of the sinoatrial (SA) node is the ________ wave.
- A.
P
- B.
QRS
- C.
T
- D.
S-T
Correct Answer
A. PExplanation
The electrocardiogram (ECG) wave that results from the firing of the sinoatrial (SA) node is the P wave.Rate this question:
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- 8.
The brachial vein ________.
- A.
Drains blood from the popliteal vein, then empties that blood into the external iliac vein
- B.
Drains blood from the popliteal vein, then empties that blood into the femoral vein
- C.
Drains blood from the radial and ulnar veins, then empties that blood into the axillary vein
- D.
Drains blood from the axillary vein, then empties that blood into the superior vena cava
- E.
Drains blood from the internal jugular vein, then empties that blood into the superior vena cava
Correct Answer
C. Drains blood from the radial and ulnar veins, then empties that blood into the axillary veinExplanation
The brachial vein drains blood from the radial and ulnar veins, which are located in the forearm. It then empties this blood into the axillary vein, which is located in the armpit. This pathway allows for the return of deoxygenated blood from the forearm to the heart.Rate this question:
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- 9.
In a centrifuged blood sample, the buffy coat situated between the formed elements and the plasma contains ________.
- A.
Leukocytes only
- B.
Leukocytes and platelets
- C.
Platelets and erythrocytes
- D.
Leukocytes and erythrocytes
- E.
Eythrocytes only
Correct Answer
B. Leukocytes and plateletsExplanation
The buffy coat in a centrifuged blood sample is a thin layer located between the formed elements (red blood cells and platelets) and the plasma. It contains leukocytes (white blood cells) and platelets.Rate this question:
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- 10.
Large veins have ________ to prevent the backflow of blood.
- A.
Shunts
- B.
Valves
- C.
Sphincters
- D.
Tunics
Correct Answer
B. ValvesExplanation
Large veins have valves to prevent the backflow of blood. These valves are one-way flaps that open and close, allowing blood to flow towards the heart and preventing it from flowing backwards. This helps to maintain the proper direction of blood flow and ensure efficient circulation throughout the body.Rate this question:
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- 11.
During coagulation, long, hairlike molecules known as ________ form the basis for a clot.
- A.
Thrombin
- B.
Fibrinogen
- C.
Fibrin
- D.
Prothrombin
Correct Answer
C. FibrinExplanation
During coagulation, fibrinogen is converted into fibrin by the enzyme thrombin. Fibrin forms a mesh-like structure that helps in the clotting process by trapping blood cells and platelets to form a stable clot. This process is essential for preventing excessive bleeding and promoting wound healing.Rate this question:
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- 12.
The term that means heart contraction is ________.
- A.
Fibrillation
- B.
Tachycardia
- C.
Systole
- D.
Diastole
Correct Answer
C. SystoleExplanation
Systole is the correct answer because it refers to the contraction phase of the heart's cardiac cycle. During systole, the heart muscles contract, pumping blood out of the chambers and into the arteries. This is an essential process for maintaining blood circulation throughout the body. Fibrillation, tachycardia, and diastole are not the correct terms for heart contraction. Fibrillation refers to irregular and rapid heartbeats, tachycardia refers to a fast heart rate, and diastole refers to the relaxation phase of the cardiac cycle.Rate this question:
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- 13.
The transportation of blood from the right side of the heart to the lungs and back to the left side of the heart is known as ________ circulation.
- A.
Systemic
- B.
Cardiac
- C.
Coronary
- D.
Pulmonary
Correct Answer
D. PulmonaryExplanation
The transportation of blood from the right side of the heart to the lungs and back to the left side of the heart is known as pulmonary circulation. This is because it involves the circulation of blood between the heart and the lungs, where oxygen is picked up and carbon dioxide is released. Systemic circulation refers to the circulation of blood throughout the rest of the body, cardiac circulation refers to the circulation within the heart, and coronary circulation refers to the circulation within the coronary arteries that supply blood to the heart muscle.Rate this question:
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Current Version
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Mar 21, 2023Quiz Edited by
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Apr 17, 2015Quiz Created by
Breanna
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