Epidermal cells synthesize this vitamin when exposed to sunlight.
A) vitamin D2
B) vitamin C
C) vitamin E
D) vitamin D3
E) vitamin A
D) vitamin D3
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At rest, more blood flows to the skin and abdominal organs than to the lungs.
Answer the following statement true (T) or false (F)
A mechanoreceptor in the papillary layer of the dermis that responds to fine touch is a
A) tactile (Merkel) disc. B) root hair plexus. C) free nerve ending. D) Bulbous corpuscle. E) tactile (Meissner) corpuscle.
Which nervous system division works antagonistically to the sympathetic nervous system?
A) somatic nervous system B) central nervous system C) parasympathetic nervous system D) sensory nervous system
Changes in cerebrospinal fluid pH are detected by ________.
A. nociceptors B. proprioceptors C. thermoreceptors D. mechanoreceptors E. chemoreceptors