Inhibitory postsynaptic potentials are due to the opening or ____ channels.
Fill in the blank(s) with the appropriate word(s).
chloride or potassium
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Answer the following statements true (T) or false (F)
1. The terms innate immunity and nonspecific immunity refer to the same thing. 2. The main difference between active and passive immunity is where the immunity develops. 3. A main difference between natural and artificial immunity is how the body was exposed to the harmful agent. 4. The combining sites on an antibody are only exposed when it is attached to an antigen. 5. Adults can produce B lymphocytes in both the liver and red bone marrow.
Of the following muscle types, which one is usually under voluntary control?
A) skeletal muscle B) cardiac muscle C) smooth muscle D) None of the above.
What neurotransmitter is released by the inner hair cells once they have depolarized?
A. ATP B. Acetylcholine C. Norepinephrine D. Glutamate
Which effector listed below is found in the reflex arc for defecation?
A. Spinal cord B. Stretch receptors in the rectal wall C. The rectal wall D. Motor neurons in the rectal wall