Exam 28: Defenses against Disease

Fevers are a defense mechanism that helps our bodies fight off invading parasites. Based on this information, should you "starve a fever"?

_______cells remain in our body after the initial exposure to a disease organism and help the immune system recognize that particular organism during a second exposure.

The _______ immune system is a specific defense against parasites and internal diseases that exists only in vertebrate animals.

Which of the following areas of the human body is not the location of a major concentration of white blood cells?

A vaccine stimulates the formation of _________ cells by introducing the immune system to a killed or weakened form of a virus before they are exposed to the actual pathogen.

Any pathogens that macrophages find indigestible can be isolated from other cells by

Which of the following statements about the human immune response is true?

A disease-causing agent is called a ________.

The diagnosis of cancer represents a failure of the body's cancer ______________ system.

Active immunity results from injecting

Which of the following would explain why doctors are very careful to match certain DNA sequences in an organ donor to those of an organ recipient in the case of a necessary organ transplant?

Which of the following is likely to be first on the scene of a bacterial infection?

Which of the following do not directly cause diseases?

Which of the following statements correctly describes the immune response when the invading organism is a virus?

__________ proteins attach to antibodies bound to antigens on the surfaces of invading cells. This helps macrophages bind to these cells in preparation for phagocytosis.

Adaptive immune responses are faster at responding to the invasion of a pathogen than innate immune responses.

_____ blood cells are a kind of defensive cells found in the interstitial fluid between the cells in the most vulnerable parts of the body and circulating in the blood.

The fetus of a lion receives antibodies that were produced by its mother while it was still in the womb. This is an example of

In the case of AIDS, death is more likely to result from other infections that the immune system cannot control than from HIV itself.

_______ nodes are pockets that contain specialized cells and trap bacteria and viruses roaming the body.