Wallerian degeneration involves the breakdown of
A. the segments of axon and myelin sheath between the site of damage and the peripheral effector.
B. the segments of axon and myelin sheath between the site of damage and the cell body.
C. the neurilemma both central and peripheral to the site of trauma.
D. macrophages and microglia that have completed the job of CNS cleanup after trauma.
A
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A. cell produced by cleavage; a hollow ball of cells B. fetal membrane; an embryonic membrane C. hollow ball of cells; a cell resulting from cleavage D. fetal organ produced by cleavage; an embryonic organ produced by cleavage
Which bone contains diaphysis and epiphysis areas, a tuberosity near its middle, and is proportionally more compact than spongy bone?
A) parietal bone B) talus C) humerus D) cervical vertebra
Thyrotropin-releasing hormone targets the __________.
A. thyroid gland B. thyroid hormone C. hypothalamus D. posterior pituitary E. anterior pituitary
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