Which action causes the closure of the right atrioventricular valve?
A. Contraction of the right ventricle
B. Contraction of the left atrium
C. Contraction of the left ventricle
D. Contraction of the right atrium
E. None of these answers is correct.
Answer: A
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What is the advantage of storing energy as glycogen rather than as lipids?
A) It contains more energy per unit mass. B) It does not prevent physical functions of a cell. C) It can be mobilized very rapidly. D) Both A and B
Which bones make up the upper jaw??
A) ?Maxilla B) ?Ethmoid C) ?Parietal D) ?Lacrimal
____________________ are the receptors that experience the least amount of adaptation
Fill in the blank(s) with correct word
Cytotoxic T cells ________
A) require the double recognition signal of class I MHC plus class II MHC on the target cell in order to function B) self-destruct once the antigen has been neutralized C) function mainly to stimulate the proliferation of other T cell populations D) can directly attack and kill other cells of the body