Question 1

Which of the following is NOT a function of plasma proteins in blood?

Accepted Answer

Serving as carriers for various substances

Question 2

A patient presents with a deficiency in fibrinogen. Which physiological process would be most directly impaired?

Accepted Answer

Blood clot formation

Question 3

Which blood cell type is primarily responsible for phagocytosis of pathogens during the innate immune response?

Accepted Answer

Neutrophils

Question 4

Which of the following best describes the difference between innate and adaptive immunity?

Accepted Answer

Innate immunity is rapid and nonspecific, while adaptive immunity is slow and specific.

Question 5

Which immune cell type is most likely to release histamine and contribute to allergic reactions?

Accepted Answer

Basophils

Question 6

A researcher is studying the migration of mature white blood cells from the bone marrow into circulation. Which of the following statements is TRUE?

Accepted Answer

Mature WBCs use membrane markers to migrate through the blood vessel wall.

Question 7

Which of the following is a mechanical barrier that helps protect the body from external pathogens?

Accepted Answer

Skin

Question 8

Natural Killer (NK) cells are best described as:

Accepted Answer

Cells that target and destroy cells lacking 'self' markers

Question 9

Which of the following is TRUE regarding the structure of antibodies?

Accepted Answer

The Fc region determines the antibody class

Question 10

A patient with asthma is likely to have increased activity of which type of white blood cell?

Accepted Answer

Eosinophils

Question 11

Which of the following equations correctly represents the calculation of blood flow rate ($$Q) $$given the volume ($$V) $$and time ($$t$$)?

Accepted Answer

$$Q = V \div t$$

Question 12

Which plasma protein is primarily responsible for iron transport in the blood?

Accepted Answer

Transferrin

Question 13

During the adaptive immune response, antigen-presenting cells (APCs) play a critical role by:

Accepted Answer

Presenting antigens on MHC receptors to T lymphocytes

Question 14

Which of the following is a correct sequence of events in the response to exposed collagen in a damaged blood vessel wall?

Accepted Answer

Platelet adhesion, release of factors, platelet aggregation, formation of platelet plug

Question 15

Which of the following is NOT a cellular element found in blood?

Accepted Answer

Plasma

Question 16

Which of the following best describes the role of the lymphatic system?

Accepted Answer

It absorbs and transfers interstitial fluid and proteins to the circulatory system.

Question 17

Which of the following is a chemical barrier that helps protect the body from pathogens?

Accepted Answer

Enzymes

Question 18

Which of the following statements about hematopoiesis is correct?

Accepted Answer

It is the process by which all blood cells are formed from stem cells.

Question 19

Which of the following is a key feature of adaptive immunity that distinguishes it from innate immunity?

Accepted Answer

Memory of previous exposures

Question 20

A patient is found to have a deficiency in albumin. Which of the following symptoms would most likely result?

Accepted Answer

Edema due to decreased colloid osmotic pressure

Blood Composition, Immune Cells, and Immunity Mechanisms

Study Guide - Practice Questions