Loss of coordination and balance, but not paralysis is associated with:
a. damage to descending excitatory pathways
b. excitatory inputs to motor neurons being unopposed because of disruption of an inhibitory system in the brain stem.
c. damage to the spinal cord
d. damage to the cerebellum
e. loss of alpha motor neurons
D
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____________________ are molecules produced by nerve cells and bind to nonsynaptic receptors
Fill in the blank(s) with correct word
Lungs are held tightly to the wall of the thorax due to
A) the diaphragm and intercostal muscle contractions. B) tight junctions between the lungs and the thorax. C) surface tension of the pleural fluid and negative pressure in the cavity. D) atmospheric pressure pushing on the lungs. E) pulmonary ligaments that anchor the lungs.
Nerve fibers in the skin are found in which of the following layers?
A) reticular layer B) epidermis C) papillary layer D) All of the answers are correct. E) None of the answers are correct.
Inhibin secreted by granulosa cells selectively inhibits secretion of FSH by the pituitary.
Answer the following statement true (T) or false (F)