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

Question 1

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

Accepted Answer

Production of hormones

Question 2

Blood plasma is considered a colloid because:

Accepted Answer

It contains suspended proteins that do not settle out of solution

Question 3

Which plasma protein is most responsible for maintaining osmotic pressure and viscosity of blood?

Accepted Answer

Albumin

Question 4

A patient presents with jaundice. Which breakdown product of hemoglobin is most likely elevated in their blood?

Accepted Answer

Bilirubin

Question 5

Which of the following best describes the process of erythropoiesis?

Accepted Answer

Formation of red blood cells

Question 6

A person with type AB blood can receive blood from which of the following types without risk of agglutination?

Accepted Answer

Type A, B, AB, and O

Question 7

Which equation correctly represents the conversion of carbon dioxide for transport in the blood?

Accepted Answer

$$CO_2 + H_2O$$ \rightarrow H_2CO_3 \rightarrow H^+ + $$HCO_3$$^-$$

Question 8

Which of the following is a correct sequence in the breakdown of hemoglobin?

Accepted Answer

Hemoglobin → Biliverdin → Bilirubin

Question 9

A patient with thrombocytopenia would most likely have which of the following laboratory findings?

Accepted Answer

Platelet count of 100,000/microliter

Question 10

Which of the following best explains the role of von Willebrand factor in hemostasis?

Accepted Answer

It forms a bridge between exposed collagen and platelets

Question 11

Which pathway of coagulation is initiated by tissue factor (TF) released from damaged tissues?

Accepted Answer

Extrinsic pathway

Question 12

A newborn develops hemolytic disease due to Rh incompatibility. Which scenario is most likely responsible?

Accepted Answer

Rh-negative mother, Rh-positive fetus

Question 13

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

Accepted Answer

Neutrophils

Question 14

Which of the following is a positive feedback mechanism in blood clotting?

Accepted Answer

Thrombin stimulates activation of more clotting factors

Question 15

Which laboratory test is used to measure the percentage of blood volume that is red blood cells?

Accepted Answer

Hematocrit

Question 16

Which of the following is required for the synthesis of many clotting factors?

Accepted Answer

Vitamin K

Question 17

A patient with anemia due to chronic kidney disease is most likely deficient in which hormone?

Accepted Answer

Erythropoietin

Question 18

Which of the following best describes the role of platelets in hemostasis?

Accepted Answer

They form plugs and release chemicals for clotting

Question 19

Which of the following equations represents the calculation for hematocrit?

Accepted Answer

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

Question 20

Which of the following is a correct description of the ABO blood group system?

Accepted Answer

Type AB blood has no antibodies against A or B antigens

Chapter 19: Cardiovascular System – Blood (Anatomy & Physiology Study Notes)

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