Exam 24: A: Immune System

An antigen consists of two heavy and two light polypeptide chains.

Interleukins are cytokinins.

The fetal liver may act as the site for the first stage of T cell development.

The inflammatory response is the body's first line of defense.

One function of prostaglandins it to reduce fever caused by bacterial infection.

The letters "CD" following a T cell stand for cellular diversity.

Parts of the first line of immune defense are in the integumentary system.

Cell-mediated immunity involves T cells.

Both B and T lymphocytes develop from hematopoietic stem cells.

About 10% to 15% of all cells in any organ are phagocytes.

The characteristic signs of inflammation are the results of increased blood flow and increased vascular permeability.

The surface membranes of cancer cells are thought to have abnormal antigens.

When pseudopods form a phagocyte,completely surrounding an organism and forming a sac around it,the structure formed is called a phagosome.

Even though tumor cells are part of your body,your immune system treats them as "foreign" and tries to destroy them.

CD4 and CD8 T cell subsets are clinically important in diagnosing AIDS.

Inactive B cells produce antibodies that insert on their plasma membranes to serve as antigen receptors.

The specific immune system has a more rapid response than the nonspecific immune system.