Card Set Information
What are the three encapsulated somatosensory mechanoreceptors?
What are three non-encapsulated somatosensory mechanoreceptors?
free nerve endings
hair follicle receptor
Papillae epidermal layers (most superficial)
T/F: Myelination occurs within the spiral layers of Meissner's corpuscle?
False, but there are still Schwann cells
Which of the mechanoreceptors are the
primary afferent nerve fibers
What are the two proprioceptors?
Golgi tendon organs (GTOs)
Are nociceptors free nerve endings or hair follicle receptors?
Free nerve endings (but not all free nerve endings are nociceptors)
What are the three
? When fired?
noxious levels >45 C, <17C
chemical, algesic mediators
What type of nociceptor does
What type of free nerve ending fibers can
C fibers (smallest of all)
How the body makes a mechanical stimulus into an electrical signal
-open cation channels
-Na+ moves in depolarizing cells
SA or RA
Axons release NT and substance P = Inflammation
Threshhold decreased of A-delta and C-fibers
Are A-delta and C-fibers myelinated or not?
Both, just depends where