Q: A patient’s hematocrit is measured as follows: the total blood column is 200 mm, and the erythrocyte column is 80 mm. What is the hematocrit percentage?

$$\frac{80}{200} \times 100\% = 40\%$$

Question 1

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

Accepted Answer

Production of digestive enzymes

Question 2

A patient’s hematocrit is measured as follows: the total blood column is 200 mm, and the erythrocyte column is 80 mm. What is the hematocrit percentage?

Accepted Answer

$$\frac{80}{200} 	imes 100\% = 40\%$$

Question 3

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

Accepted Answer

Albumin

Question 4

A person with blood type AB negative needs a transfusion. Which of the following blood types can they safely receive?

Accepted Answer

A negative, B negative, AB negative, and O negative

Question 5

Which formed element is primarily responsible for carrying oxygen in the blood?

Accepted Answer

Erythrocytes

Question 6

A woman who is Rh-negative is pregnant with an Rh-positive baby. Why is RhoGAM administered during pregnancy?

Accepted Answer

To prevent the buildup of anti-Rh antibodies in the mother's blood

Question 7

Which type of leukocyte is most abundant in human blood and functions as a phagocyte at sites of infection?

Accepted Answer

Neutrophil

Question 8

A patient’s blood sample agglutinates with anti-A and anti-D (Rh) serum, but not with anti-B serum. What is the patient’s blood type?

Accepted Answer

A positive

Question 9

Which of the following is a function of eosinophils?

Accepted Answer

Fight parasitic worms and play a role in allergy attacks

Question 10

Which of the following conditions may be indicated by a low hematocrit value?

Accepted Answer

Anemia

Question 11

Which plasma protein is essential for blood clotting?

Accepted Answer

Fibrinogen

Question 12

A patient with type O negative blood is considered a universal donor. Which of the following explains why?

Accepted Answer

Type O negative blood lacks both A, B, and Rh antigens, so it does not trigger an immune response in recipients

Question 13

Which of the following is TRUE regarding the ABO blood group system?

Accepted Answer

Type A blood contains only A antigens

Question 14

Which of the following is a correct description of lymphocytes?

Accepted Answer

They function as part of the immune response and produce antibodies

Question 15

Which of the following is a possible cause of pernicious anemia?

Accepted Answer

Autoimmune disease leading to poor vitamin B12 absorption

Question 16

Which of the following statements about platelets is CORRECT?

Accepted Answer

They are derived from ruptured multinucleate cells called megakaryocytes

Question 17

A patient’s blood sample does NOT agglutinate with anti-A, anti-B, or anti-D (Rh) serum. What is the patient’s blood type?

Accepted Answer

O negative

Question 18

Which of the following is a function of basophils?

Accepted Answer

Release heparin and histamine at sites of inflammation

Question 19

Which of the following is TRUE regarding the Rh factor and pregnancy?

Accepted Answer

Problems occur only if the mother is Rh-negative and the baby is Rh-positive

Question 20

Which of the following is the correct formula for calculating hematocrit percentage?

Accepted Answer

$$	ext{Hematocrit} = \frac{	ext{Height of RBC column}}{	ext{Total height of blood column}} 	imes 100\%$$

Blood: Structure, Function, and Clinical Relevance

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