Question 1

Which of the following best describes the primary function of the lymphatic system?

Accepted Answer

Returning interstitial fluid to the bloodstream and participating in immune defense

Question 2

Which of the following is a primary lymphatic organ?

Accepted Answer

Thymus

Question 3

Which of the following is NOT considered part of the first line of defense in the immune system?

Accepted Answer

Phagocytosis

Question 4

A patient is exposed to a virus for the first time. Which immune response is primarily responsible for eliminating the virus during the initial exposure?

Accepted Answer

Innate immune response

Question 5

Which white blood cell is most directly responsible for killing virus-infected cells by releasing perforin and granzymes?

Accepted Answer

Cytotoxic T cells

Question 6

Which of the following best describes the role of MHC II molecules?

Accepted Answer

Present exogenous antigens to helper T cells

Question 7

A patient with a deficiency in hepcidin is likely to experience which of the following?

Accepted Answer

Increased iron release from enterocytes and macrophages

Question 8

Which of the following equations correctly represents cardiac output?

Accepted Answer

$$CO = HR 	imes SV$$

Question 9

During the cardiac cycle, which event is represented by the QRS complex on an ECG?

Accepted Answer

Ventricular depolarization

Question 10

Which of the following changes would most likely result in an increase in blood pressure?

Accepted Answer

Increased sympathetic nervous system activity

Question 11

A patient is experiencing an allergic reaction. Which class of antibody is most likely elevated in their plasma?

Accepted Answer

IgE

Question 12

Which of the following best describes the function of transferrin in the blood?

Accepted Answer

Transports iron in plasma

Question 13

Which of the following is the correct sequence of events in hemostasis?

Accepted Answer

Vascular spasm, plug formation, coagulation

Question 14

Which of the following would most likely occur if baroreceptors in the carotid sinus detect a sudden drop in blood pressure?

Accepted Answer

Increased sympathetic output to the heart and blood vessels

Question 15

A patient has a hematocrit of 60%. Which of the following is most likely true?

Accepted Answer

The patient is likely dehydrated or has polycythemia

Question 16

Which of the following best explains why capillaries are the primary site of nutrient and gas exchange?

Accepted Answer

They have the slowest blood flow and thin walls

Question 17

Which of the following is a function of albumin in plasma?

Accepted Answer

Maintains osmotic pressure and transports substances

Question 18

A patient with a genetic defect in DMT1 (divalent metal transporter 1) would most likely have which of the following?

Accepted Answer

Impaired iron absorption from the intestine

Question 19

Which of the following best describes the effect of increased vessel length on blood pressure, assuming all other factors remain constant?

Accepted Answer

Increases resistance and raises blood pressure

Question 20

Which of the following best describes the role of the AV node in the cardiac conduction system?

Accepted Answer

Delays the electrical impulse to allow ventricular filling

Study Guide: Immune, Cardiovascular, and Blood Physiology

Study Guide - Practice Questions

Study Guide - Flashcards