Exam 32: Innate Immunity

Toll-like receptors help facilitate the overall innate immune response.

Adaptive immunity is also called _____ immunity.

Explain the role of toll-like receptors in the nonspecific immune system.

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

Match each term with its corresponding definition. -Phagocytic monocyte (nongranular WBC) in the immune system

Macrophages are a group of lymphocytes that kill many types of tumor cells and cells infected by different kinds of viruses.

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

Interferon production is stimulated by the presence of double-stranded DNA in a cell.

A chemotactic factor attracts antibodies to the site of infection.

Which substance can destroy pathogens by chemically hydrolyzing them?

The ability of our immune system to attack abnormal or foreign cells but spare our own normal cells is called:

Which of the following is not a chemical used as a chemical barrier to pathogens?

Explain how fever develops. How do various medicines like aspirin treat fever? What possible advantage does fever give the body?

T lymphocytes release histamine, kinins, and prostaglandins at the site of an infection.

Interferon can act like a paracrine hormone that allows infected cells to send an alarm to other nearby cells.

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

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

An autoimmune disease would indicate a problem with development of self-tolerance in the immune system.

The agent that causes tuberculosis is surrounded by a waxy layer that prevents water-soluble proteins from penetrating it. It is known that cells in the immune system have a very difficult time killing these agents through phagocytosis. Explain why this is true.

Natural killer cells are lymphocytes that are actually part of nonspecific immunity.