$$\text{Prothrombinase} \rightarrow \text{Prothrombin} \rightarrow \text{Thrombin} \rightarrow \text{Fibrinogen} \rightarrow \text{Fibrin}$$

Question 1

Which of the following best describes the primary function of albumins in blood plasma?

Accepted Answer

They are the main contributors to blood osmotic pressure and transport fatty acids, thyroid hormones, and some steroids.

Question 2

A patient presents with yellowing of the skin and eyes (jaundice). Which of the following best explains the physiological cause of this symptom?

Accepted Answer

High levels of bilirubin in the blood due to impaired uptake or excretion by the liver.

Question 3

Which of the following statements about erythropoiesis is correct?

Accepted Answer

It is stimulated by erythropoietin (EPO), which is released in response to hypoxia.

Question 4

A person with type AB- blood can safely receive which of the following blood types in a transfusion?

Accepted Answer

A-, B-, AB-, and O-

Question 5

Which of the following best explains why mature mammalian red blood cells lack mitochondria?

Accepted Answer

To ensure that oxygen carried by hemoglobin is delivered to tissues rather than consumed by the cell itself.

Question 6

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

Accepted Answer

An Rh-negative mother carrying an Rh-positive fetus during her second pregnancy.

Question 7

Which of the following is a correct sequence of events in the common pathway of blood coagulation?

Accepted Answer

$$	ext{Prothrombinase} ightarrow 	ext{Prothrombin} ightarrow 	ext{Thrombin} ightarrow 	ext{Fibrinogen} ightarrow 	ext{Fibrin}$$

Question 8

Which white blood cell type is primarily responsible for producing antibodies as part of the specific immune response?

Accepted Answer

B lymphocytes

Question 9

A patient with a genetic deficiency in Factor VIII would most likely have a problem with which phase of hemostasis?

Accepted Answer

Intrinsic pathway of the coagulation phase

Question 10

Which of the following best describes the fate of iron released during the breakdown of red blood cells?

Accepted Answer

It binds to transferrin and is transported to the bone marrow for reuse in hemoglobin synthesis.

Question 11

Which of the following is a function of platelets during hemostasis?

Accepted Answer

They release chemicals that promote clotting and form a temporary plug at the injury site.

Question 12

A patient is found to have a suppressed reticulocyte count and anemia. Which of the following is the most likely explanation?

Accepted Answer

Decreased erythropoiesis in the bone marrow

Question 13

Which of the following best explains why vitamin K deficiency can lead to impaired blood clotting?

Accepted Answer

Vitamin K is required for the synthesis of several clotting factors by the liver.

Question 14

Which of the following best describes the role of neutrophils during an acute bacterial infection?

Accepted Answer

They are the first white blood cells to arrive at the site and phagocytize bacteria marked with antibodies.

Question 15

A patient is given a broad-spectrum antibiotic and later develops a bleeding disorder. Which of the following best explains this outcome?

Accepted Answer

The antibiotic reduced gut bacteria, decreasing vitamin K synthesis and impairing clotting factor production.

Question 16

Which of the following best describes the process of fibrinolysis?

Accepted Answer

The enzymatic digestion of fibrin strands by plasmin, leading to clot dissolution.

Question 17

Which of the following is a correct statement about the difference between plasma and serum?

Accepted Answer

Serum is plasma without fibrinogen and clotting factors.

Question 18

Which of the following best explains why type O- blood is considered the universal donor?

Accepted Answer

It lacks A, B, and Rh antigens, minimizing the risk of agglutination in recipients.

Question 19

A patient with a high hematocrit and increased blood viscosity is at risk for which of the following complications?

Accepted Answer

Impaired blood flow and increased risk of thrombosis

Chapter 19: Blood – Structure, Function, and Clinical Relevance

Study Guide - Practice Questions