$$\frac{\text{Volume of RBCs}}{\text{Total Blood Volume}} \times 100$$

$$\frac{\text{Number of WBCs}}{\text{Total Number of Blood Cells}} \times 100$$

Question 1

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

Accepted Answer

Carrying oxygen directly to tissues

Question 2

By volume, which component of blood is the most abundant?

Accepted Answer

Plasma

Question 3

If the hematocrit level in a patient drops significantly, which of the following is the most likely consequence?

Accepted Answer

Decreased oxygen-carrying capacity

Question 4

Which equation correctly represents the calculation of hematocrit?

Accepted Answer

$$\frac{	ext{Volume of RBCs}}{	ext{Total Blood Volume}} 	imes 100$$

Question 5

Which of the following best describes the difference between granulocytes and agranulocytes?

Accepted Answer

Granulocytes contain visible cytoplasmic granules; agranulocytes do not.

Question 6

Which hormone is primarily responsible for stimulating the production of red blood cells?

Accepted Answer

Erythropoietin

Question 7

Where are hematopoietic stem cells primarily located in adults?

Accepted Answer

Red bone marrow

Question 8

Which of the following is a correct sequence for the development of a mature erythrocyte?

Accepted Answer

Hemocytoblast → Proerythroblast → Erythroblast → Reticulocyte → Erythrocyte

Question 9

A patient is found to have a deficiency in platelets. Which of the following conditions is most likely to occur?

Accepted Answer

Impaired blood clotting

Question 10

Which of the following white blood cells is most abundant in a normal differential count?

Accepted Answer

Neutrophils

Question 11

Which of the following is a function of lymphocytes?

Accepted Answer

Producing antibodies

Question 12

Which of the following best describes the role of hemoglobin in red blood cells?

Accepted Answer

Binding and transporting oxygen

Question 13

A patient with a genetic mutation affecting the shape of their red blood cells is most likely to have which condition?

Accepted Answer

Sickle cell anemia

Question 14

Which of the following is the correct formula for calculating the percentage of white blood cells in a blood sample?

Accepted Answer

$$\frac{	ext{Number of WBCs}}{	ext{Total Number of Blood Cells}} 	imes 100$$

Question 15

Which of the following is a direct effect of erythropoietin on the body?

Accepted Answer

Increased production of red blood cells

Question 16

Which of the following best explains why a person living at high altitude may have a higher hematocrit?

Accepted Answer

Lower oxygen levels stimulate erythropoietin release, increasing RBC production

Question 17

Which of the following is NOT a function of platelets?

Accepted Answer

Transporting oxygen

Question 18

Which of the following best describes the process of hemostasis?

Accepted Answer

The sequence of events that stops bleeding after blood vessel injury

Question 19

Which of the following is a correct step in the formation of a blood clot?

Accepted Answer

Conversion of fibrinogen to fibrin

Question 20

A patient is found to have an abnormally high number of white blood cells. Which condition is most likely?

Accepted Answer

Leukemia

Blood Physiology: Structure, Function, and Cellular Components

Study Guide - Practice Questions