Physiology III Neuroscience - Receptor Types

Receptor types	Adapting	Fiber type used	Function-signal	Sensation felt	Located where	Goes where
Meissner’s corpuscles	Rapidly	A-beta	Texture, velocity	Tap and flutter	Glabrous skin	Dc/ml system
Merkel’s cells	Slowly	A-beta	Edge detection, displacement velocity	Light pressure	Glabrous skin	Dc/ml system
Ruffini complex	Slowly	A-beta	Skin stretch, joint movement, displacement velocity	Unknown	Hairy skin- are deep tactile mechanoreceptors	Dc/ml system
Pacinian corpuscle	Rapidly	A-beta	Vibration, transients	Vibration	Hairy skin, skin dermis & fascia around bone & muscle	Dc/ml system
Hair follicle receptors	Both RA and SA	A-beta	Velocity	Motion, direction	Hair follicles	Dc/ml system
Proprioceptors
1.afferent fibers		Ia, II		Stretch	Muscle spindles	Dc/ml system
2. Golgi tendon organs		Ib		Stretch of specific muscle fascicle	Junction of tendon & muscles	Dc/ml system
3. Joint receptors				Gives knowledge of position of joints		Dc/ml system
Free nerve endings		A-delta, C				ALS

Physiology III
Neuroscience Exam II
Receptor Types