Paralysis of all four limbs is called ________.
Fill in the blank(s) with the appropriate word(s).
quadriplegia
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Which of the following is false or incorrect?
A) An excitatory postsynaptic potential occurs if the excitatory effect is greater than the inhibitory effect but less than threshold. B) An inhibitory postsynaptic potential occurs if the inhibitory effect is greater than the excitatory, causing hyperpolarization of the membrane. C) A nerve impulse occurs if the excitatory and inhibitory effects are equal.
Cells that are arranged in several layers are called ________ cells.
A. cuboidal B. stratified C. columnar D. squamous
Target cells make more receptors for a particular hormone when the level of that hormone declines in the blood stream. This process is known as:
A) upregulation. B) the second-messenger system. C) synergism. D) downregulation.
What is NOT a function of the peroxisome?
A) oxidize toxic substances B) break down fatty acids C) synthesize certain phospholipids D) protein synthesis