Temperature Sensation and Regulation

Question 1

_____ receptors have lower density and C fiber axons.

Answer 1

Warm receptors

Question 2

____ receptors have higher density (but still lower than mechanoreceptors and nociceptors) and A-delta fibers.

Answer 2

Cool receptors

Question 3

TRPV1 & 2

Answer 3

Noxious heat

Question 4

TRPV3 & 4

Answer 4

warm temperatures

Question 5

TRPMB

Answer 5

cool temperatures

Question 6

TRPA1

Answer 6

noxious cold

Question 7

Because mechanoreceptive signals travel ipsilaterally in the spinal cord while thermoreceptive (and nociceptive) signals travel contralaterally in the spinal cord, unilateral damage to the spinal cord can produce _______, in which tactile perception is diminished/lost on one side of the body while thermal and pain perception is diminished/lost on the opposite side of the body

Answer 7

“Brown-Sequard Syndrome”

Question 8

The ______ of the hypothalamus is the principle CNS thermoregulatory center

Answer 8

preoptic area (POA)

Question 9

Three ways evaporation occurs

Answer 9

Through mucous membranes
By passive diffusion through skin (insensible perspiration)
By sweating