Q: Which of the following is the correct formula for calculating hematocrit ($$Hct) if $$you know the volume of erythrocytes ($$V_{RBC}) $$and the total blood volume ($$V_{total}$$)?

$$Hct = \frac{V_{RBC}}{V_{total}} \times 100$$

Question 1

Which of the following best describes the primary function of erythrocytes in the blood?

Accepted Answer

To transport respiratory gases such as oxygen and carbon dioxide

Question 2

A patient with a hematocrit of 60% is most likely experiencing which of the following conditions?

Accepted Answer

Polycythemia

Question 3

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

Accepted Answer

Albumin

Question 4

A person with type AB blood can safely receive blood from which of the following donors?

Accepted Answer

Any ABO blood type

Question 5

Which of the following best explains why mature erythrocytes cannot reproduce?

Accepted Answer

They lack a nucleus and organelles

Question 6

During an acute bacterial infection, which type of leukocyte would you expect to be elevated in a blood smear?

Accepted Answer

Neutrophils

Question 7

A patient with a deficiency in vitamin B12 is most likely to develop which type of anemia?

Accepted Answer

Pernicious anemia

Question 8

Which of the following is the correct sequence of events in hemostasis?

Accepted Answer

Vascular spasm, platelet plug formation, coagulation

Question 9

Which hormone is primarily responsible for stimulating erythropoiesis in response to hypoxia?

Accepted Answer

Erythropoietin

Question 10

A person with type A blood has which of the following antibodies in their plasma?

Accepted Answer

Anti-B antibodies

Question 11

Which of the following best describes the fate of the iron from hemoglobin after erythrocyte destruction?

Accepted Answer

It is stored in the liver for reuse

Question 12

Which of the following is a function of basophils?

Accepted Answer

Release of histamine and heparin during allergic reactions

Question 13

A patient with deep venous thrombosis (DVT) is at risk for which of the following complications if the clot dislodges?

Accepted Answer

Embolism

Question 14

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

Accepted Answer

It contains no A or B antigens

Question 15

A mother with Rh- blood is pregnant with an Rh+ fetus. What is the risk in subsequent pregnancies if untreated?

Accepted Answer

The fetus may develop hemolytic disease of the newborn

Question 16

Which of the following is the correct formula for calculating hematocrit ($$Hct) if $$you know the volume of erythrocytes ($$V_{RBC}) $$and the total blood volume ($$V_{total}$$)?

Accepted Answer

$$Hct = \frac{V_{RBC}}{V_{total}} 	imes 100$$

Question 17

Which of the following best describes the role of fibrinogen in blood?

Accepted Answer

It helps form blood clots

Question 18

A patient with a high eosinophil count is most likely suffering from which of the following?

Accepted Answer

A parasitic worm infection or allergies

Question 19

Which of the following statements about leukocytes is correct?

Accepted Answer

They use the blood as a means of travel and can leave blood vessels

Question 20

A patient presents with fatigue, pallor, and shortness of breath. Laboratory results show a low hemoglobin concentration and low hematocrit. Which of the following is the most likely diagnosis?

Accepted Answer

Anemia

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