Costanzo Neurophysiology - Sensory Nerve Fiber Types Flashcards Preview

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Flashcards in Costanzo Neurophysiology - Sensory Nerve Fiber Types Deck (16):
1

What is a type A-alpha fiber?

large alpha motor neuron

2

What are the sensory fiber types of A-alpha fibers?

Ia - Muscle spindle fibers
Ib - golgi tendon organs

3

What is the relative diameter and conduction velocity of the sensory fiber types of A-alpha fibers?

Large diameter
fast conduction

4

What is an A-beta fiber?

Neuron for touch, pressure (no name)

5

What are the sensory fiber types of A-beta fibers?

II - secondary afferents of muscle spindles, touch and pressure

6

What is the relative diameter and conduction velocity of the sensory fiber types of A-beta fibers?

Medium diameter
Medium conduction velocity

7

What is a type A-gamma fiber?

gamma motor neurons to muscle spindles (intrafusal spindles)

8

What is the relative diameter and conduction velocity of the sensory fiber types of A-gamma fibers?

Medium diameter
Medium conduction velocity

9

What is a type A-delta fiber?

No specific name

Detects touch, pressure, temperature, and pain

10

What are the sensory fiber types of A-delta fibers?

III - touch, pressure, fast pain, and temperature

11

What is the relative diameter and conduction velocity of the sensory fiber types of A-delta fibers?

Small diameter
Medium conduction velocity

12

What is a type B fiber?

Preganglionic autonomic fibers

13

What is the relative diameter and conduction velocity of the sensory fiber types of B fibers?

Small diameter
Medium conduction velocity

14

What is a type C fiber?

Slow pain
Postganglionic autonomic fibers

15

What are the sensory fiber types of C fibers?

IV - pain and temperature - unmyelinated

16

What is the relative diameter and conduction velocity of the sensory fiber types of C fibers?

Smallest diameter
Slowest conduction