Question 1

Which of the following best describes the process of erythropoiesis and its regulation in the human body?

Accepted Answer

Erythropoiesis is the production of erythrocytes from stem cells in the bone marrow, regulated by erythropoietin (EPO) released in response to hypoxia-inducible factors (HIFs) when oxygen levels are low.

Question 2

A patient with a parasitic worm infection is likely to have an elevated count of which leukocyte, and what is its primary function?

Accepted Answer

Eosinophils; they attack parasitic worms and modulate allergic responses.

Question 3

During hemostasis, which sequence correctly describes the steps of coagulation?

Accepted Answer

Vascular spasm → Platelet plug formation → Prothrombin activator formation → Prothrombin to thrombin → Fibrinogen to fibrin

Question 4

A person with blood type AB- can safely receive which of the following blood types in a transfusion?

Accepted Answer

O-

Question 5

Which of the following best explains why cardiac muscle cannot undergo tetanus?

Accepted Answer

The plateau phase of the cardiac action potential prolongs the refractory period, preventing tetanus.

Question 6

Which of the following equations correctly calculates cardiac output (CO)?

Accepted Answer

$$CO = HR 	imes SV$$

Question 7

A patient is experiencing hypovolemic shock after severe blood loss. Which of the following best describes the physiological changes occurring?

Accepted Answer

Decreased blood volume, decreased cardiac output, and decreased venous return.

Question 8

Which of the following best describes the role of the vasomotor center in blood pressure regulation?

Accepted Answer

It provides sympathetic stimulation to blood vessels, causing vasoconstriction and increasing peripheral resistance.

Question 9

Which of the following is a correct sequence for the conduction system of the heart?

Accepted Answer

SA node → AV node → Bundle of His → Purkinje fibers

Question 10

Which of the following best explains the Frank-Starling law of the heart?

Accepted Answer

The greater the preload (end-diastolic volume), the greater the force of contraction and stroke volume.

Question 11

Which of the following best describes the function of the coronary arteries?

Accepted Answer

They supply oxygenated blood to the myocardium.

Question 12

Which of the following is a function of basophils in the immune response?

Accepted Answer

Release of histamine and heparin to promote inflammation.

Question 13

Which of the following best describes the effect of nitric oxide (NO) on blood vessels?

Accepted Answer

NO causes vasodilation, decreasing peripheral resistance and blood pressure.

Question 14

A patient with a mutation causing defective spectrin in erythrocytes would most likely experience which of the following?

Accepted Answer

Decreased erythrocyte flexibility, leading to hemolysis and anemia.

Question 15

Which of the following correctly matches the heart valve with its location?

Accepted Answer

Tricuspid valve – between the right atrium and right ventricle

Question 16

Which of the following best explains why veins require valves, while arteries do not?

Accepted Answer

Veins carry blood under low pressure and against gravity, so valves prevent backflow.

Question 17

Which of the following is the correct formula for determining mean arterial pressure (MAP) given cardiac output (CO), blood volume (BVol), and peripheral resistance (PR)?

Accepted Answer

$$MAP = CO 	imes PR$$

Question 18

Which of the following best describes the role of the medulla oblongata in cardiovascular regulation?

Accepted Answer

It contains the cardiac centers (CAC and CIC) and the vasomotor center, integrating autonomic control of heart rate and vessel diameter.

Question 19

A patient with edema is found to have increased capillary hydrostatic pressure (HPc). Which of the following best explains how this leads to edema?

Accepted Answer

Increased HPc pushes more fluid out of the capillaries into the interstitial space, leading to fluid accumulation.

Blood and Cardiovascular System: Study Notes for ANP College Students

Study Guide - Practice Questions

Study Guide - Flashcards