Question 1

Which of the following best describes the primary function of lymphatic capillaries as shown in the provided images?

Accepted Answer

They absorb and return excess tissue fluid to the bloodstream.

Question 2

Based on the lymphatic pathway diagram, what is the correct sequence of lymph flow from the tissues back to the bloodstream?

Accepted Answer

Lymphatic capillary → Afferent lymphatic vessel → Lymph node → Efferent lymphatic vessel → Lymphatic trunk → Collecting duct → Subclavian vein

Question 3

A patient develops swelling in the arm after lymph node removal during breast cancer surgery. Which physiological process best explains this edema?

Accepted Answer

Obstruction of lymphatic vessels, preventing return of tissue fluid to the bloodstream

Question 4

Which of the following statements about lymph nodes is correct based on their structure and function?

Accepted Answer

Lymph nodes filter lymph, removing pathogens and debris before returning it to the blood.

Question 5

Which of the following best describes the role of the thymus in immunity?

Accepted Answer

It is the site where T lymphocytes mature and become immunocompetent.

Question 6

A child is born without a functional thymus. Which immune cell population would be most directly affected?

Accepted Answer

T lymphocytes

Question 7

Which of the following is a correct statement about the spleen based on its structure and function?

Accepted Answer

The spleen filters blood, removing damaged cells and pathogens, and contains both white and red pulp.

Question 8

Which of the following is NOT a function of the lymphatic system?

Accepted Answer

Producing hormones that regulate blood glucose

Question 9

A patient receives a kidney transplant and is prescribed immunosuppressive drugs. What is the primary reason for this treatment?

Accepted Answer

To reduce the risk of tissue rejection by suppressing the immune response against the transplanted organ

Question 10

Which of the following best explains why fever can be beneficial during an infection?

Accepted Answer

Fever creates a hostile environment for pathogens and enhances the activity of phagocytic cells.

Question 11

Which of the following is a correct match between an antibody class and its function?

Accepted Answer

IgG – Found in tissue fluid and plasma, defends against bacteria, viruses, and toxins

Question 12

A person is exposed to a pathogen for the first time and develops symptoms after several days. Which immune response is primarily responsible for the delayed appearance of antibodies?

Accepted Answer

Primary immune response

Question 13

Which of the following best describes the process of phagocytosis in the innate immune response?

Accepted Answer

Engulfment and digestion of pathogens by neutrophils and monocytes

Question 14

Which of the following is a characteristic of delayed-reaction hypersensitivity (Type IV)?

Accepted Answer

It involves T cell activation and develops 48 hours after exposure.

Question 15

Which of the following best explains the difference between active and passive immunity?

Accepted Answer

Active immunity results from direct exposure to an antigen and produces memory cells, while passive immunity results from receiving antibodies and does not produce memory cells.

Question 16

Which of the following is a real-life example of naturally acquired passive immunity?

Accepted Answer

Antibodies passing from mother to fetus through the placenta

Question 17

A patient with Type 1 diabetes mellitus has an autoimmune disorder. Which of the following best describes the underlying mechanism?

Accepted Answer

The immune system attacks and destroys the beta cells of the pancreas.

Question 18

Which of the following is a function of the complement system in the immune response?

Accepted Answer

Enhancing phagocytosis, attracting immune cells, and lysing foreign cells

Question 19

Which of the following best describes the role of helper T cells in the immune response?

Accepted Answer

They stimulate B cells to produce antibodies and activate cytotoxic T cells.

Question 20

A person receives an injection of gamma globulins after exposure to hepatitis. Which type of immunity is this, and what is its duration?

Accepted Answer

Artificially acquired passive immunity; short-term

Lymphatic System and Immunity: Structured Study Notes

Study Guide - Practice Questions

Study Guide - Flashcards