In the body's lever systems, the
A. joint represents the fulcrum point.
B. force or pull is applied by the bone.
C. fulcrum is the part being moved.
D. weight is the muscle mass.
E. lever is a pivot point.
A
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The process by which the kidneys eliminate excess acid or base is relatively
A. slow (takes hours to days) and limited (is not very powerful). B. quick (takes minutes) and powerful. C. slow (takes hours to days) but powerful. D. quick (takes minutes) but limited (is not very powerful).
A muscle fiber is stimulated to contract when receptors on the ________ bind with acetylcholine released into the synaptic cleft by the terminal bouton of the ________.
A. synaptic vesicles; motor neuron B. motor neuron; sarcolemma C. sarcolemma; motor neuron D. sarcomere; motor neuron
Red marrow is the substance responsible for the formation of blood cells.
Indicate whether the statement is true or false
If the pituitary gland is removed from a human subject, which of the following is likely to occur?
A. The adrenal gland will hypertrophy to increase cortisol production. B. There will be increased negative feedback on growth hormone by insulin-like growth factor 1 (IGF-1). C. The subject will remain euthyroid. D. The hypothalamus will secrete less CRH. E. The adrenal gland will atrophy and plasma cortisol levels will be reduced.