$$\text{Antibody} + \text{Antigen} \rightarrow \text{Complement Activation} \rightarrow \text{MAC Formation} \rightarrow \text{Cell Lysis}$$

$$\text{Antibody} + \text{Antigen} \rightarrow \text{Tagging for Phagocytosis}$$

Question 1

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

Accepted Answer

They absorb excess tissue fluid and plasma proteins, returning them to the bloodstream.

Question 2

A patient has swelling in their right arm and right side of the head. Which lymphatic duct is most likely blocked?

Accepted Answer

Right lymphatic duct

Question 3

Which of the following is NOT a function of the spleen?

Accepted Answer

Producing antibodies

Question 4

During an inflammatory response, which chemical is primarily responsible for causing blood vessels to dilate and capillaries to become leaky?

Accepted Answer

Histamine

Question 5

Which of the following statements about lymphatic vessels is TRUE?

Accepted Answer

They are one-way systems with valves, ensuring lymph flows only toward the heart.

Question 6

A child receives a vaccine for measles. Which type of immunity is being acquired?

Accepted Answer

Active immunity, artificially acquired

Question 7

Which antibody is most abundant in plasma and can cross the placenta barrier?

Accepted Answer

IgG

Question 8

A patient develops an allergic reaction to pollen. Which immunoglobulin is primarily involved?

Accepted Answer

IgE

Question 9

Which of the following is a major function of helper T cells?

Accepted Answer

Release cytokines to stimulate other immune cells

Question 10

Which process describes the movement of neutrophils through capillary walls to sites of inflammation?

Accepted Answer

Diapedesis

Question 11

A patient receives antibodies from another person to treat a disease. This is an example of:

Accepted Answer

Passive immunity, artificially acquired

Question 12

Which of the following is NOT part of the MALT (mucosa-associated lymphoid tissue)?

Accepted Answer

Spleen

Question 13

Which cell type is responsible for producing antibodies in humoral immunity?

Accepted Answer

B lymphocytes

Question 14

Which of the following is a characteristic of the adaptive immune system?

Accepted Answer

Antigen specificity and memory

Question 15

Which equation best represents the process of complement fixation leading to cell lysis?

Accepted Answer

$$	ext{Antibody} + 	ext{Antigen} ightarrow 	ext{Complement Activation} ightarrow 	ext{MAC Formation} ightarrow 	ext{Cell Lysis}$$

Question 16

Which scenario best illustrates the concept of self-tolerance in T cell development?

Accepted Answer

T cells that bind to self-antigens are destroyed during maturation in the thymus.

Question 17

Which of the following is a multi-step process that occurs during the inflammatory response?

Accepted Answer

Neutrophils migrate to the site, squeeze through capillary walls by diapedesis, and consume foreign material.

Question 18

Which of the following best explains why organ transplants require immunosuppressive therapy?

Accepted Answer

To prevent the recipient's immune system from attacking the transplanted tissue as foreign.

Question 19

Which equation represents the process of opsonization?

Accepted Answer

$$	ext{Antibody} + 	ext{Antigen} ightarrow 	ext{Tagging for Phagocytosis}$$

Question 20

A patient with multiple sclerosis is experiencing destruction of white matter in the brain and spinal cord. Which type of immune disorder is this?

Accepted Answer

Autoimmune disease

The Lymphatic System and Body Defenses: Structured Study Notes

Study Guide - Practice Questions