MasteringAandP: Chapter 20 Quiz

Examples of physical barriers against pathogens include all of the following except

blood

Histamine increases blood flow and vascular permeability. This would account for all of the following changes that occur during inflammation except

chemotaxis of phagocytes.

Which of the following statements regarding lymph is false?

Lacteals are prominent lymphatic vessels in the respiratory system.

The cells that perform immunological surveillance are the ________ cells.

NK

List the components of the lymphatic system. (Module 20.1B)

The components of the lymphatic system are the lymphocytes, lymph, lymphatic vessels, primary lymphoid tissues and organs, and secondary lymphoid tissues and organs.

Describe the drainage of the right lymphatic duct and the thoracic duct. (Module 20.3A)

The right lymphatic duct collects lymph from the right side of the body superior to the diaphragm. The thoracic duct collects lymph from the body inferior to the diaphragm and the left side superior to the diaphragm.

The effects of activating the complement system include all of the following except

inhibition of the immune response.

The white pulp of the spleen is populated by

lymphocytes.

The cells responsible for producing antibody molecules are ________ cells.

plasma

In response to tissue damage and infection, circulating proteins called pyrogens

produce a fever.

Name the two large lymphatic vessels into which the lymphatic trunks empty. (Module 20.3B)

right lymphatic duct and thoracic duct

The largest single collection of lymphoid tissue in the adult body is located in the

spleen

Lymphocytes are produced and stored in all of the following except

the brain

Lymphocyte production does not occur in

the liver

The thymus produces several complementary hormones called

thymosins.

________ are large lymphoid nodules that are located in the walls of the pharynx.

tonsils

________ cells provide cell-mediated immunity.

CD8 T

Lymphatic vessels are located in almost all portions of the body except the

CNS

Where is the thymus located? (Module 20.6A)

anterior mediastinum, posterior to the sternum

Nonspecific defenses would not include

antibodies

A substance that provokes an immune response is called a(n)

antigen

Compared to blood capillaries, lymph capillaries exhibit all of the following except that they

are smaller in diameter.

Helper T cells do all of the following except

destroy target cells using perforins.

Which class of leukocytes is particularly abundant in the red pulp of the spleen?

free and fixed macrophages

When large numbers of antibodies encounter their antigenic targets, they interact to form a three-dimensional structure known as a(n)

immune complex.