MSK Muscle & Nerve

Question 1

Which sensory fiber type goes to primary muscle spindles & golgi tendon organs?

Answer 1

Aa

(the fastest conductor sensory efferent fiber)

Question 2

Which sensory fiber type goes to secondary muscle spindles and mechanoreceptors?

Answer 2

Ab

(the second fastest efferent sensory fiber type)

Question 3

Which sensory fiber type goes to skin mechanoreceptors thermoreceptors and nociceptors?

Answer 3

Ad & C

(these are the slowest/have the smallest diameter of the sensory fibers)

Question 4

What are the efferent and afferent fiber types that go to skin, mechanoreceptors, thermoreceptors, and nociceptors?

Answer 4

• Afferent: Ad & C
• Efferent: III & IV

Question 5

What are the afferent and efferent fiber types that go to secondary muscle spindles and skin mechanoreceptors?

Answer 5

• Afferent: Ab
• Efferent: II

Question 6

What are the afferent and efferent fiber types that go to primary muscle spindles and Golgi tendon organs?

Answer 6

• Afferent: Aa
• Efferent: Ia & Ib

(These are the fastest/have the widest diameter of sensory nerve fibers)

Question 7

Which motor (peripheral nerve) fiber types go to extra muscle skeletal muscle fibers?

Answer 7

Aa

(these are the widest/fastest fibers of the motor fibers)

Question 8

Which motor (peripheral nerve) fiber goes to intrafusal muscle fibers?

Answer 8

Ag

(the second fastest motor fiber type).

Question 9

Which motor (peripheral nerve) fiber type is preganglionic autonomic fibers?

Answer 9

B

(afferent, no efferent)

Question 10

Which motor (peripheral nerve) fiber type is postganglionic autonomic fibers?

Answer 10

C

(slowest/has smallest diameter; no afferent fibers)