A sensory receptor characterized peripherally as a free nerve ending and centrally uses glutamate and/or substance P as neurotransmitters,would most likely be a
A)chemoreceptor.
B)mechanoreceptor.
C)thermoreceptor.
D)nociceptor.
E)free receptor.

Question

Quizplus · Accepted Answer

Nociceptors are sensory receptors that respond to noxious or potentially damaging stimuli, such as extreme heat or cold, intense pressure, or tissue damage. They are typically characterized peripherally as free nerve endings and centrally use glutamate and/or substance P as neurotransmitters.

A Sensory Receptor Characterized Peripherally as a Free Nerve Ending