Exam 32: Innate Immunity

The most numerous type of phagocyte is the:

Neutrophils function in the immune system by producing immunoglobulins.

The epithelial barriers in the body are part of the innate, nonspecific defenses of the body and do not play a role in the specific immune system.

Most of the pus surrounding an inflammation site consists of dead or damaged tissue cells.

Cytokines are chemicals released from cells to trigger or regulate both innate and adaptive immune responses.

The membrane attack complex is used by macrophages to mark bacteria for phagocytosis and antibody attack.

The body identifies normal body cells by way of the unique major histocompatibility complex displayed by the cell as a surface protein.

The toll-like receptors on the cell membrane can be seen as a midpoint between specific and nonspecific immunity.

Two-year-old Jenny was exposed to chickenpox. She was already undergoing treatment for leukemia. Her oncologist decided to give her a dose of interferon. What effect was the physician hoping for with this approach?

Which substance can destroy pathogens by lowering the pH to a level at which they cannot function?

Interferon mainly interferes with the ability of bacteria to produce disease.

Apoptosis is a programmed cell death used by natural killer cells.

All of the following are major types of interferon except _____ interferon.

Heat, redness, swelling, and pain are characteristic signs of inflammation.

The role of fibroblasts in the inflammation response is to lay down a collagen web to try to isolate the infecting organism.

Diapedesis is the process by which neutrophils migrate out of the bloodstream and around the tissue cells to the injury site.

A fever is a reset of the body's thermostat.

One function of phagocytes is to function as antigen-presenting cells.

Natural killer cells are 15% of the total lymphocyte cell number.

Match each term with its corresponding definition. -Protein produced by the immune system to interfere with the ability of viruses to cause disease