Loading....
Coupon Accepted Successfully!

Physiology

Open Flashcards

Central Nervous System

Question
19 out of 23
 

Gamma neurons innervate: (LQ)



A Extrafusal muscle fibers

B Intrafusal muscle fibers

C Primary motor innervations to skeletal muscles

D Inhibit antagonistic muscles

Ans. B Intrafusal muscle fibers
  1. In addition to the alpha motor neurons that excite contraction of the skeletal muscle fibers, about one half as many much smaller gamma motor neurons are located along with the alpha motor neurons in the anterior horns. Q
  2. These transmit impulses through type-A gamma fibers, averaging 5 micron in diameter, to very small, special skeletal muscle fibers called intrafusal fibers, present in the muscle spindle.

Central Nervous System Flashcard List

23 flashcards
1)
2)
3)
4)
5)
6)
7)
8)
9)
10)
11)
12)
13)
14)
15)
16)
17)
18)
19)
20)
21)
22)
23)