Antibodies ________
A) each recognize several different antigens
B) bind to an antigen and destroy it by phagocytosis
C) provide for cellular immunity in the body
D) are proteins composed of heavy chains and light chains
Answer: D
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The pulmonary plexus is a weblike network of nerve fibers that surrounds the primary bronchi and enters the lungs at the hilum. It consists of both sympathetic and parasympathetic fibers.
Answer the following statement true (T) or false (F)
The four large blood vessels, two from each lung, that empty into the left atrium, completing the pulmonary circuit, are the:
venae cavae subclavian veins pulmonary veins pulmonary arteries none of the choices are correct
A major lesson we can learn from examining sexual behavior in other cultures is that:
A. all societies regulate the sexual behavior of women in some way, but not that of men. B. culture and learning profoundly influence and are major determinants of human sexual behavior. C.there is relatively little variation across societies in human sexual behavior, which demonstrates the importance of instinct and drive in human sexual behavior. D. human sexual behavior differs significantly from that of other species of mammals.
What is a synergist?
A. The main muscle of the synergist to perform the action B. A muscle that has the same action C. A muscle that holds an origin stable for another muscle D. A muscle that has the opposite action