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Receptors

40 questions found

Practice Questions

Regarding pain reception, the sensation of fast, sharp, and highly localized pain is transmitted to the CNS by

A. Unmyelinated C fibers
B. Myelinated A-delta fibers
C. A-beta fibers
D. B fibers

Fast, sharp pain (like a needle prick) is transmitted rapidly by myelinated A-delta fibers. Slow, dull, aching pain is transmitted by unmyelinated C fibers.

nmdcat.online BIO NMDCAT
Jul 7, 2026

The encapsulated mechanoreceptors located in the dermal papillae that are highly sensitive to light touch and low-frequency vibration are

A. Pacinian corpuscles
B. Meissner's corpuscles
C. Ruffini endings
D. Merkel discs

Meissner's corpuscles are rapidly adapting, encapsulated receptors found just beneath the epidermis in hairless skin, specializing in fine, discriminative touch.

nmdcat.online BIO NMDCAT
Jul 7, 2026
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