Question 1

Which plasma protein is primarily responsible for blood clotting, and what is its main function?

Accepted Answer

Fibrinogen; forms fibrin threads during coagulation

Question 2

A patient with anemia is found to have a low hematocrit and reduced hemoglobin concentration. Which of the following best explains the impact on oxygen transport?

Accepted Answer

Decreased oxygen transport because fewer erythrocytes are available

Question 3

During hemopoiesis, which formed element is produced in response to erythropoietin, and what is its primary function?

Accepted Answer

Erythrocyte; oxygen transport

Question 4

A blood sample is drawn from the median cubital vein for analysis. Which component is most likely to be measured to assess clotting ability?

Accepted Answer

Fibrinogen levels

Question 5

Which equation best represents the relationship between blood flow ($$F$$), pressure difference ($$\Delta P$$), and resistance ($$R) in $$the circulatory system?

Accepted Answer

$$F = \frac{\Delta P}{R}$$

Question 6

A newborn is diagnosed with hemolytic disease of the newborn. Which scenario most likely led to this condition?

Accepted Answer

Mother is Rh negative and fetus is Rh positive

Question 7

Which of the following best describes the difference between pulmonary and systemic circuits?

Accepted Answer

Pulmonary circuit delivers deoxygenated blood to the lungs; systemic circuit delivers oxygenated blood to the body

Question 8

Which layer of the heart wall is responsible for the contractile function and contains cardiac muscle tissue?

Accepted Answer

Myocardium

Question 9

A patient presents with pericarditis. Which structure is directly affected by this condition?

Accepted Answer

Pericardium

Question 10

Which of the following best describes the role of calcium ions ($$	ext{Ca}^{2+}) in $$cardiac muscle contraction?

Accepted Answer

Calcium ions bind to troponin, allowing actin-myosin interaction

Question 11

Which equation correctly calculates stroke volume ($$SV) $$given end-diastolic volume ($$EDV) $$and end-systolic volume ($$ESV$$)?

Accepted Answer

$$SV = EDV - ESV$$

Question 12

During a transfusion, a patient with type A blood receives type B blood. What is the most likely outcome?

Accepted Answer

Transfusion reaction due to anti-B antibodies attacking B antigens

Question 13

Which type of white blood cell is primarily responsible for antibody production?

Accepted Answer

B lymphocyte

Question 14

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

Accepted Answer

Prolonged bleeding

Question 15

Which phase of hemostasis involves the conversion of fibrinogen to fibrin?

Accepted Answer

Coagulation phase

Question 16

Which equation best represents mean arterial pressure ($$MAP) $$given systolic ($$SBP) $$and diastolic ($$DBP) $$blood pressures?

Accepted Answer

$$MAP = DBP + \frac{1}{3}(SBP - DBP)$$

Question 17

Which of the following best describes the effect of sympathetic stimulation on the SA node?

Accepted Answer

Increases heart rate by depolarizing pacemaker cells

Question 18

Which type of capillary is most likely to be found in the liver, allowing large molecules to pass through?

Accepted Answer

Sinusoidal capillary

Question 19

A patient with arteriosclerosis is most likely to experience which of the following changes in their blood vessels?

Accepted Answer

Decreased elasticity and increased resistance

Question 20

During vigorous exercise, which cardiovascular response is most likely to occur?

Accepted Answer

Increased cardiac output and enhanced tissue perfusion

Blood, Heart, and Blood Vessels: Study Guide for Chapters 19–21 (BIO 212)

Study Guide - Practice Questions

Study Guide - Flashcards