Question 1

Which of the following best describes the difference between exocrine and endocrine glands?

Accepted Answer

Exocrine glands release their products onto epithelial surfaces via ducts, while endocrine glands secrete hormones directly into the bloodstream.

Question 2

A patient has a tumor affecting the anterior pituitary gland. Which hormone would most likely be affected, and what is its primary function?

Accepted Answer

Growth hormone (GH); stimulates growth and cell reproduction.

Question 3

Which equation correctly represents the relationship between cardiac output, stroke volume, and heart rate?

Accepted Answer

$$CO = SV 	imes HR$$

Question 4

During external respiration, which process is primarily responsible for the movement of oxygen from alveoli into the blood?

Accepted Answer

Simple diffusion

Question 5

A patient with anemia is found to have a low hematocrit. Which of the following best explains this finding?

Accepted Answer

There is a decreased percentage of red blood cells in the blood.

Question 6

Which of the following best describes the role of the hypothalamic-pituitary axis in hormone regulation?

Accepted Answer

It controls hormone release through negative feedback mechanisms.

Question 7

Which of the following is the correct sequence for the flow of lymph from tissues back to the circulatory system?

Accepted Answer

Lymphatic capillaries → lymphatic vessels → lymph nodes → thoracic duct → subclavian vein

Question 8

Which of the following best explains why capillaries are the primary site of exchange between blood and tissues?

Accepted Answer

Capillaries have thin walls and a large surface area, facilitating efficient exchange.

Question 9

A patient receives a blood transfusion of type AB blood. Which blood type(s) can safely donate to this patient?

Accepted Answer

Type A, type B, type AB, and type O

Question 10

Which of the following best describes the function of the spleen in the lymphatic system?

Accepted Answer

It filters blood, removes old red blood cells, and helps mount immune responses.

Question 11

Which of the following equations correctly represents Boyle's Law as it applies to respiration?

Accepted Answer

$$P_1$$ $$V_1$$ = $$P_2$$ $$V_2$$

Question 12

Which of the following is a nonspecific defense mechanism in human immunity?

Accepted Answer

Inflammation and phagocytosis by neutrophils

Question 13

A patient is experiencing difficulty with gas exchange in the lungs due to thickened alveolar walls. Which factor is most directly affected?

Accepted Answer

Diffusion distance for respiratory gases

Question 14

Which of the following best explains the effect of increased blood viscosity on blood pressure?

Accepted Answer

Blood pressure increases due to increased resistance.

Question 15

Which of the following correctly describes the role of baroreceptors in cardiovascular regulation?

Accepted Answer

They detect changes in blood pressure and help regulate heart rate.

Question 16

Which of the following is the primary function of erythropoietin?

Accepted Answer

Stimulates the production of red blood cells.

Question 17

A patient with hyperventilation is likely to experience which change in blood pH?

Accepted Answer

Increase in blood pH (alkalosis)

Question 18

Which of the following best describes the relationship between resistance, blood flow, and blood pressure?

Accepted Answer

Blood flow decreases as resistance increases, if blood pressure remains constant.

Question 19

Which of the following lymphocytes is primarily responsible for antibody production?

Accepted Answer

B cells

Question 20

A patient is found to have a deficiency in surfactant production in the lungs. What is the most likely consequence?

Accepted Answer

Increased alveolar surface tension, leading to alveolar collapse.

BIO2020 Anatomy & Physiology II: Midterm Study Guide Notes

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