Q: Which of the following equations correctly represents the calculation for the total number of red blood cells in a healthy adult female, given an average concentration of $$4.8 \times 10^6$ cells per microliter and a total blood volume of 5$ liters? (Assume 1$ liter $$= $$10^6$$ microliters)

$$4.8 \times 10^6$ \times 5 \times 10^6$

Question 1

Which of the following best describes the primary function of erythropoietin in the process of erythropoiesis?

Accepted Answer

It promotes the production of red blood cells in the bone marrow in response to hypoxia.

Question 2

A patient with type AB blood is considered a universal recipient. Which of the following explains why?

Accepted Answer

Type AB blood contains both A and B antigens and lacks anti-A and anti-B antibodies, so it does not react with donated blood.

Question 3

Which white blood cell type is most abundant in normal blood and is primarily responsible for phagocytosis and destruction of bacteria?

Accepted Answer

Neutrophils

Question 4

During an allergic reaction, which blood cell type is most likely to increase in number and participate in the response?

Accepted Answer

Eosinophils

Question 5

A blood sample agglutinates with both anti-A and anti-B sera but not with anti-Rh serum. What is the blood type?

Accepted Answer

Type AB-

Question 6

Which of the following is the correct sequence for the sites of hematopoiesis during human development?

Accepted Answer

Yolk sac → liver, spleen, thymus, lymph nodes → bone marrow

Question 7

Which of the following statements about red blood cells (RBCs) is correct?

Accepted Answer

RBCs are biconcave discs and lack a nucleus.

Question 8

A patient with type O blood needs a transfusion. Which blood type(s) can safely be donated to this patient?

Accepted Answer

Type O

Question 9

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

Accepted Answer

They form a plug to stop blood loss from damaged vessels.

Question 10

A person with Rh-negative blood receives Rh-positive blood for the first time. What is the most likely immune response?

Accepted Answer

Production of anti-Rh antibodies, leading to a reaction upon subsequent exposures.

Question 11

Which of the following equations correctly represents the calculation for the total number of red blood cells in a healthy adult female, given an average concentration of $$4.8 	imes 10^6$ cells per microliter and a total blood volume of 5$ liters? (Assume 1$ liter $$= $$10^6$$ microliters)

Accepted Answer

$$4.8 	imes 10^6$ 	imes 5 	imes 10^6$

Question 12

Which cell type matures into a macrophage after leaving the bloodstream and entering tissues?

Accepted Answer

Monocyte

Question 13

Which pathway in blood clotting is activated by tissue trauma and involves factors released from outside the blood?

Accepted Answer

Extrinsic pathway

Question 14

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

Accepted Answer

Type A blood has anti-B antibodies in the plasma.

Question 15

Which of the following best explains why a person with type B blood cannot receive type A blood?

Accepted Answer

Type B blood contains anti-A antibodies that react with type A antigens, causing agglutination.

Question 16

Which of the following is NOT a function of neutrophils?

Accepted Answer

Production of antibodies

Question 17

Which hormone is responsible for the development of platelets from megakaryocytes?

Accepted Answer

Thrombopoietin

Question 18

A patient presents with an elevated eosinophil count. Which condition is most likely associated with this finding?

Accepted Answer

Parasitic worm infection

Question 19

Which of the following best describes the process of hemostasis?

Accepted Answer

The process to stop bleeding, involving vascular spasm, platelet plug formation, and blood clotting

Question 20

Which of the following is true regarding the lifespan and removal of platelets?

Accepted Answer

Platelets have a lifespan of 5-9 days and are removed by macrophages in the spleen and liver.

Cardiovascular System: Blood Cells and Hematopoiesis

Study Guide - Practice Questions

Study Guide - Flashcards