Cutaneous mechanoreceptors Flashcards
1
Q
C-fibers
Carry pain information
Not myelinated–>slow conduction
A
Free nerve endings
2
Q
A-beta fibers Associated with rete ridges in non-hairy superficial skin; sits at dermal-epidermal border Associated with single afferent fiber Detect tap, flutter, skin motion Rapidly adapting
A
Meissner’s corpuscles
3
Q
A-beta fibers
Found in deeper skin
Unencapsulated; sensitive to touch and pressure
Detect surfaces and edges (braille)
Innervate neuroendocrine cells, NOT skin directly
Slowly adapting
A
Merkel cells
4
Q
A-beta, A-delta fibers
Associated with hair follicles
Detect motion, direction, and position of hairs in the skin
Rapid or slow adapting
A
Hair follicle receptors
5
Q
A-beta fibers Deep skin, large organs Encapsulated; detect vibration Rapidly adapting Large receptive field, so no two-point discrimination
A
Pacinian corpuscles
6
Q
A-beta fibers
Unclear function–possibly sense position of limbs and joints or skin stretching
Found deep in dermis
Slow adapting, large receptive fields
A
Ruffini
