Which of the following completely encloses the embryo and provides it with a stable environment?
A. Allantois
B. Amnion
C. Chorion
D. Yolk sac
E. Chorionic villus
Answer: B
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Which of the following describes the major function of serous membranes?
A) Their parietal and visceral portions never touch. B) Tiny amounts of transudate on their opposing surfaces reduce friction. C) They line body cavities that communicate with the exterior. D) Each consists of a mesothelium supported by dense connective tissue. E) They are loosely attached to the body wall and to the organs they cover.
A group of nerve cell bodies outside the CNS is called a ________
A) Dendrites B) Ganglion C) Axons D) Glia
The bony elevations immediately inferior to your eyebrows are the
A. superciliary arches. B. external occipital protuberances. C. dorsum nasi. D. mental region. E. superorbital ridges.
The primary goal of the immune response is
A. destruction or inactivation of pathogens and foreign material. B. maintenance of the proper ionic balance between lymph and blood. C. stimulation of mitotic activity in order to replace cells damaged by infection. D. reduction of the number of circulating memory lymphocytes. E. removal of antibodies from lymph and lymphatic organs.