Question 1

Which of the following best describes the role of the lymphatic capillaries in the immune system?

Accepted Answer

They collect excess interstitial fluid and transport it to lymph nodes for immune surveillance.

Question 2

A patient presents with edema in the lower limbs. Which of the following is the most likely cause related to the lymphatic system?

Accepted Answer

Obstruction of lymphatic vessels preventing fluid return to circulation.

Question 3

Which organ is considered a primary lymphatic organ responsible for the maturation of T cells?

Accepted Answer

Thymus

Question 4

Which of the following is a function of the complement system in immunity?

Accepted Answer

Forming membrane attack complexes to lyse pathogens

Question 5

A patient experiences an anaphylactic shock after exposure to peanuts. Which immune response is primarily responsible for this reaction?

Accepted Answer

Humoral (antibody-mediated) immunity involving IgE antibodies

Question 6

Which cell type is responsible for presenting antigens to helper T cells (CD4+) in the adaptive immune response?

Accepted Answer

Antigen-presenting cells (APCs)

Question 7

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

Accepted Answer

$P_1 V_1 = P_2 V_2$

Question 8

During external respiration, which of the following best describes the movement of gases?

Accepted Answer

Oxygen diffuses from the alveoli into the blood, and carbon dioxide diffuses from the blood into the alveoli.

Question 9

A patient with bronchoconstriction is likely to experience which of the following symptoms?

Accepted Answer

Decreased airflow and difficulty breathing (dyspnea)

Question 10

Which of the following respiratory volumes is defined as the amount of air inhaled or exhaled during normal, quiet breathing?

Accepted Answer

Tidal volume

Question 11

Which enzyme is secreted by the pancreas and is responsible for the breakdown of proteins in the small intestine?

Accepted Answer

Trypsin

Question 12

A patient is diagnosed with Helicobacter pylori infection. Which condition is most likely associated with this infection?

Accepted Answer

Gastric ulcer

Question 13

Which of the following best describes the function of bile produced by the liver?

Accepted Answer

It emulsifies fats in the small intestine.

Question 14

Which structure increases the surface area for absorption in the small intestine?

Accepted Answer

Villi and microvilli

Question 15

Which hormone stimulates the release of bile from the gallbladder and pancreatic enzymes into the small intestine?

Accepted Answer

Cholecystokinin (CCK)

Question 16

A patient with chronic liver disease is unable to synthesize sufficient plasma proteins. Which of the following is a likely consequence?

Accepted Answer

Edema due to reduced oncotic pressure

Question 17

Which of the following best describes the process of chemotaxis in the immune response?

Accepted Answer

Movement of immune cells toward higher concentrations of chemical signals at infection sites

Question 18

Which of the following is a function of cytotoxic T cells (CD8+)?

Accepted Answer

Directly kill infected or cancerous cells

Question 19

Which of the following best explains the difference between innate and adaptive immunity?

Accepted Answer

Innate immunity provides immediate, non-specific defense, while adaptive immunity develops specific responses over time.

Question 20

A patient is experiencing hyperventilation. Which of the following changes in blood gases is most likely to occur?

Accepted Answer

Decreased partial pressure of carbon dioxide ($P_{CO_2}$)

Anatomy & Physiology Study Notes: Lymphatic, Immune, Respiratory, and Digestive Systems

Study Guide - Practice Questions