$$ \text{Rate}_{\text{secondary}} \u003e \text{Rate}_{\text{primary}} $$

Question 1

Which of the following best describes the primary function of the lymphatic system in regulating fluid volume?

Accepted Answer

It collects excess interstitial fluid as lymph and returns it to the bloodstream.

Question 2

Which specialized lymphatic capillary is responsible for the absorption of dietary fats in the small intestine?

Accepted Answer

Lacteal

Question 3

Refer to the first image provided. What is the correct sequence of lymph flow through a lymph node?

Accepted Answer

Afferent lymphatic → cortex → medulla → efferent lymphatic

Question 4

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

Accepted Answer

Producing hormones for T cell maturation

Question 5

Which cell type acts as an antigen-presenting cell (APC) and is recognized specifically by T cells?

Accepted Answer

Dendritic cell

Question 6

Which of the following best describes the role of the thymus in the immune system?

Accepted Answer

It produces hormones that allow T cells to mature.

Question 7

Which antibody class is most abundant in blood and is the only one that can cross the placenta?

Accepted Answer

IgG

Question 8

Refer to the second image provided. Which region of the antibody is responsible for binding to antigens?

Accepted Answer

Variable region

Question 9

Which of the following equations correctly represents the relationship between pressure, flow, and resistance in lymphatic vessels?

Accepted Answer

$$ Q = \frac{\Delta P}{R} $$

Question 10

Which of the following is a function of complement proteins in innate immunity?

Accepted Answer

Cell lysis by forming pores in target cell membranes

Question 11

A patient develops swelling in their arm after lymph node removal during cancer surgery. What is the most likely cause?

Accepted Answer

Lymphedema due to impaired lymphatic drainage

Question 12

Which of the following best describes the process of opsonization?

Accepted Answer

Antibodies coat pathogens to enhance phagocytosis

Question 13

Which equation best represents the rate of antibody production during the secondary immune response?

Accepted Answer

$$ 	ext{Rate}_{	ext{secondary}} \u003e 	ext{Rate}_{	ext{primary}} $$

Question 14

Which of the following is a characteristic of adaptive immunity compared to innate immunity?

Accepted Answer

It responds specifically to individual antigens and has immunological memory.

Question 15

Which of the following best describes the role of helper T (TH) cells?

Accepted Answer

They secrete cytokines that activate and enhance the immune response.

Question 16

Which of the following is an example of passive immunity?

Accepted Answer

Antibodies transferred from mother to fetus via placenta

Question 17

Which of the following best describes the process of antigen presentation by class I MHC molecules?

Accepted Answer

Endogenous antigens are processed and displayed on nucleated cells for cytotoxic T cell recognition.

Question 18

Which of the following is a cardinal sign of inflammation?

Accepted Answer

Redness

Question 19

Which of the following best explains why a person with AIDS is unable to mount an effective immune response?

Accepted Answer

The virus targets helper T cells, preventing activation of B cells and cytotoxic T cells.

Question 20

Which of the following is a real-world example of an autoimmune disorder?

Accepted Answer

Type I diabetes mellitus, where autoantibodies attack the pancreas

Chapter 20: The Lymphatic System and Immunity – Structured Study Notes

Study Guide - Practice Questions