Which subspecialty of physiology deals with the study of the body's defense against disease-causing agents?

All of the following are characteristics of anaphylaxis except

A) the first exposure does not always lead to a reaction. B) IgE antibodies are produced. C) symptoms include capillary dilation, airway constriction, pain and itching. D) helper T cells are destroyed. E) sensitized mast cells and basophils are stimulated upon each exposure to an allergen.

Answer these questions about chromosome structure. What does "A" represent?

A. Proteins B. Chromosome C. Centromere D. Chromatid E. Chromatin

Which cells produce hypochlorite in response to bacterial infections?

A. Basophils B. Eosinophils C. Neutrophils D. B cells E. Macrophages

Plasma composes about ________ percent of whole blood, and water composes ________ percent of the plasma volume

A) 55; 92 B) 92; 7 C) 92; 55 D) 45; 55 E) 50; 50