Best MDS Coaching | Nerve fibers involved in Proprioception

Nerve fibers involved in proprioception 

A. Type A fiber 
B. Type B fiber
C. Type C fiber 
D. Type IV fiber

Ans. A 

Propioception is carried by A α or type I fibers

Nerve Fiber Types

 

Number	Origin	Fiber type
Ia	Muscle spindle, annulo-spiral	A α
Ib	Golgi tendon organ	A α
II	Muscle spindle, flower-spray ending; touch, pressure	A β
III	Pain and cold receptors; some touch receptors	A δ
IV	Pain, temperature, and other receptor	Dorsal root C

Fiber type	Function
A α β γ δ	Proprioception; somatic motor Touch, pressure, motor Motor to muscle spindles Pain, cold, touch
B	Preganglionic autonomic
C Dorsal root Sympathetic	Pain, temperature, some mechano-reception, reflex responses Postganglionic sympathics