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B. Post ganglionic autonomic
C. Motor to muscle spindle
D. Pain
E. Temperature
The function of Nerve fibre type B is
A. Preganglionic autonomicB. Post ganglionic autonomic
C. Motor to muscle spindle
D. Pain
E. Temperature
Ans.
A.
|
Fiber
type
|
function
|
Fiber
Diameter (μm)
|
Conduction
velocity (m/s)
|
Spike
Duration (ms)
|
Absolute
Refractory period (ms)
|
|
A
|
|
|
|||
|
α
|
Proprioception;
somatic motor [MCQ]
|
12-20
|
70-120
|
|
|
|
β
|
Touch,
pressure [MCQ]
|
5-12
|
30-70
|
0.4-0.5
|
0.4-1
|
|
ϓ
|
Motor to
musde spindles
|
3-6
|
15-30
|
|
|
|
δ
|
Pain,
cold, touch [MCQ]
|
2-5
|
12-30
|
|
|
|
B
|
Preganglionic
autonomic
|
<3
|
3-15
|
1.2
|
1.2
|
|
C
|
|
|
|||
|
Dorsal
root
|
Pain,
temperature, some mechano-reception [MCQ]
|
0.4-1.2
|
0.5-2
|
2
|
2
|
|
sympathetic
|
Postganglionic
sympathetic [MCQ]
|
0.3-1.3
|
0.7-2.3
|
2
|
2
|
