Question 1

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

Accepted Answer

They carry oxygen to tissues throughout the body.

Question 2

A patient with a low platelet count is at increased risk for which of the following complications?

Accepted Answer

Difficulty forming blood clots

Question 3

Which cell type is primarily responsible for the immune response in blood?

Accepted Answer

Leukocytes

Question 4

If a blood smear shows a high number of neutrophils, what is the most likely physiological explanation?

Accepted Answer

The patient is likely fighting a bacterial infection.

Question 5

Which of the following statements about blood is correct?

Accepted Answer

White blood cells are responsible for immune defense.

Question 6

A person with a genetic disorder affecting erythrocyte production would most likely experience which symptom?

Accepted Answer

Fatigue due to reduced oxygen delivery

Question 7

Which of the following is NOT a formed element of blood?

Accepted Answer

Chondrocyte

Question 8

A laboratory test shows a patient has a normal erythrocyte count but a very low leukocyte count. What is the most likely consequence?

Accepted Answer

Increased risk of infection

Question 9

Which of the following best explains why platelets are essential for survival after an injury?

Accepted Answer

They aggregate to form clots and prevent excessive blood loss.

Question 10

If a person has a total blood volume of $$5\,L$$ and erythrocytes make up half the volume, what is the approximate volume occupied by erythrocytes?

Accepted Answer

$$2.5\,L$$

Question 11

Which of the following is a correct pairing of blood cell type and its primary function?

Accepted Answer

Platelet: clot formation

Question 12

A patient with a bone marrow disorder is unable to produce sufficient leukocytes. Which of the following is the most likely clinical outcome?

Accepted Answer

Frequent infections due to impaired immunity

Question 13

Which of the following best describes the relationship between the three main types of blood cells?

Accepted Answer

Erythrocytes transport oxygen, leukocytes defend against pathogens, and platelets form clots.

Question 14

Which of the following would most likely occur if a person had a genetic mutation that prevented the formation of platelets?

Accepted Answer

They would be at risk for excessive bleeding after injury.

Question 15

Which of the following is the correct order of abundance in normal human blood from most to least?

Accepted Answer

Erythrocytes, leukocytes, platelets

Question 16

A blood sample is analyzed and found to have a high number of lymphocytes. Which of the following is the most likely explanation?

Accepted Answer

The patient is likely fighting a viral infection.

Question 17

Which of the following best explains why erythrocytes lack a nucleus?

Accepted Answer

To maximize space for hemoglobin and oxygen transport

Question 18

If a patient has a mutation that causes their erythrocytes to be abnormally shaped, which of the following is a likely consequence?

Accepted Answer

Impaired oxygen delivery to tissues

Question 19

Which of the following is a function shared by all three main types of blood cells?

Accepted Answer

Contribution to homeostasis

Question 20

A patient is diagnosed with thrombocytopenia, a condition characterized by low platelet count. Which laboratory finding would you expect?

Accepted Answer

Prolonged bleeding time after injury

Histology Lecture Part II: Connective, Muscle, and Neural Tissues

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