Question 1

Which of the following best describes the primary function of erythrocytes in the blood?

Accepted Answer

Transporting oxygen from the lungs to body tissues

Question 2

A patient with type AB+ blood is in need of a transfusion. Which of the following blood types can safely donate to this patient without causing agglutination?

Accepted Answer

All blood types

Question 3

Which of the following statements about antigens and antibodies is correct?

Accepted Answer

Antigens are present on your own cells, while antibodies are produced to attack foreign antigens

Question 4

A patient is diagnosed with anemia due to chronic blood loss. Which of the following best explains the physiological cause of this type of anemia?

Accepted Answer

Insufficient number of red blood cells due to ongoing hemorrhage

Question 5

Which hormone is primarily responsible for vasodilation and lowering blood pressure?

Accepted Answer

Atrial Natriuretic Peptide (ANP)

Question 6

A patient presents with high blood pressure. Which of the following changes would most likely contribute to this condition?

Accepted Answer

Increased blood volume

Question 7

Calculate the Mean Arterial Pressure (MAP) for a patient with a systolic blood pressure of 120 mmHg and a diastolic blood pressure of 80 mmHg. Use the formula $$MAP = diastolic\ pressure + \frac{1}{3}(systolic\ pressure - diastolic\ pressure).$$

Accepted Answer

$$MAP = 80 + \frac{1}{3}(120 - 80) = 80 + \frac{1}{3}(40) = 80 + 13.3 = 93.3\ mmHg$$

Question 8

Which of the following best describes the role of megakaryocytes in the blood?

Accepted Answer

They produce platelets essential for blood clotting

Question 9

A patient with atherosclerosis is at increased risk for which of the following complications?

Accepted Answer

Increased risk of blood clot formation due to plaque buildup

Question 10

Which of the following white blood cells is most numerous in a healthy adult and is primarily responsible for phagocytosis of bacteria?

Accepted Answer

Neutrophils

Question 11

Which structure prevents the backflow of blood from the right ventricle into the right atrium during ventricular contraction?

Accepted Answer

Tricuspid (right AV) valve

Question 12

Which of the following best explains why veins have thinner walls and larger lumens compared to arteries?

Accepted Answer

Veins need to accommodate a larger volume of blood at lower pressure

Question 13

A patient is experiencing hypoxia. Which of the following is NOT a likely cause?

Accepted Answer

Increased erythropoiesis

Question 14

Which of the following best differentiates between elastic arteries and muscular arteries?

Accepted Answer

Elastic arteries are closer to the heart and help dampen blood pressure fluctuations, while muscular arteries distribute blood to specific organs

Question 15

Which of the following scenarios would most likely result in hypotension?

Accepted Answer

Significant blood loss from trauma

Question 16

Which of the following is a correct sequence for the pathway of blood through the heart, starting from the right atrium?

Accepted Answer

Right atrium → right ventricle → pulmonary artery → lungs → left atrium → left ventricle → aorta

Question 17

Which of the following best describes the function of the chordae tendineae in the heart?

Accepted Answer

They anchor the AV valve leaflets to prevent prolapse during ventricular contraction

Question 18

Which of the following would most likely increase peripheral resistance and thus raise blood pressure?

Accepted Answer

Vasoconstriction of arterioles

Question 19

Which of the following is a property unique to cardiac muscle tissue compared to skeletal muscle?

Accepted Answer

Presence of intercalated discs for synchronized contraction

Question 20

A patient with type O- blood requires a transfusion. Which of the following blood types can safely donate to this patient?

Accepted Answer

Type O-

Cardiovascular System: Blood, Heart, and Blood Vessels – Study Guide

Study Guide - Practice Questions

Study Guide - Flashcards