The diagram illustrates sensory nerve endings in the skin. What structure does "E" represent?
A. Meissner corpuscles
B. free nerve endings
C. Ruffini end organ
D. Pacinian corpuscle
E. Merkel disks
D
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Describe the various forms of energy that are NOT available from the food an animal ingests
What will be an ideal response?
The most widely used neurotransmitter in the ANS is
A) epinephrine. B) NE. C) ACh. D) GABA. E) All of the answers are correct.
In pregnant women, the high levels of estrogen and progesterone secretion seem to lead to
A. weaker nails and thinner hair. B. stronger nails and fuller hair.
Varicosities
a. are bulges at the end of certain types of nerve terminal branches b. can be found on the postganglionic autonomic fibers associated with certain smooth muscle cells c. contain neurotransmitter d. all of these e. none of these.