Peripheral NS

Question 1

Sensory receptors

Answer 1

stimulus type
location
structure

Question 2

stimulus type

Answer 2

Functional classification
chemo-chemicals in solution
mechano-mechanical force
thermo-temperature changes
photo-light
noci-damaging stimuli, induces pain

Question 3

Location

Answer 3

functional classification
external/internal stimulus
location of receptor

exterorecpetors - external stimuli
interorecpetors/viscerorecptors - internal stimuli
proprioceptors - change in body position (due to stretch)

Question 4

Structure

Answer 4

non-encapsulated free nerve endings
encapsulated-almost all are mechanoreceptors, one or more axon terminals that are bundled together with CT
ALL OVER

Question 5

nonencapsulated nerve endings

Answer 5

Free nerve endings- to temp, chemical change, pain and pressure
Merkel discs - tactile, respond to light touch
hair follicle receptors - respond to light touch
knob like endings of dendrites

Question 6

encapsulated nerve endings

Answer 6

Meissner’s tactile corpuscle - respond to light touch, papillary dermis
Pacinian lamellar corpuscles - respond to deep pressure, initial pressure
Bulbous Ruffini’s respond to deep continuous pressure
muscle spindles - muscle length
tendon organs - respond to tendon stretch
joint kinesthetic receptors - lamellar, bulbous, tendon, free nerve endings, proprioceptors
respond to stretch of articular structures

Question 7

Cranial nerves

Answer 7

12 pairs
10 enter the BS
2 pairs upper brain