Nerve Transmission

Question 1

Annulospiral endings of muscle spindles have what sensory nerve fiber?

Answer 1

Type Ia (alpha type A)

Question 2

What sensory fiber is found in Golgi tendons?

Answer 2

type Ib (alpha type A)

Question 3

Type II sensory nerves are found where?

Answer 3

cutaneous tactile receptors and flower spray endings of muscle spindles

Question 4

What are the function of type III sensory fibers?

Answer 4

temperature, crude touch, and pricking pain

Question 5

What are the functions of type IV sensory nerve fibers?

Answer 5

unmyelinated fibers relaying pain, itch, temperature, and crude touch

Question 6

What are the three types of motor fibers? Where are they found? Myelinated vs unmyelinated?

Answer 6

1. Skeletal muscle - alpha type A (myelinated, fastest)
2. Muscle Spindle - gamma type A (myelinated)
3. Sympathetic - type C (unmyelinated)

Question 7

Rank the sensory fibers from fastest to slowest.

Answer 7

1. Ia (a-type A)
2. Ib (a-type A)
3. II (B and g-type A)
4. III (d-type A)
5. IV (type C)