Chapter 13

THE PERIPHERAL NERVOUS SYSTEM

I. Neural structures associated with the PNS

A. Sensory Receptors

1. Classification by Location

a.

b.

c.

2. Classification by Stimulus Type Detected

a.

b.

c.

d.

e.

3. Classification by Structural Complexity

a.

b.

4. Sensory Receptor Potentials

a. Define receptor potential

b. Define adaptation

B. Nerves and Associated Ganglia

1. Structure and Classification

a. Composition of a nerve

b. Connective tissue layers associated with a nerve

(1)

(2)

(3)

2. Classification (according to direction of transmission)

a.

b.

c.

3. Steps in Regeneration of Nerve Fibers (Figure 13.3, pg. 433)

a.

b.

c.

C. Motor endings

1. Review neuromuscular junction

2. Define varicosities

II. Spinal Nerves

1. Anatomy of a spinal nerve

1. Define dorsal and ventral root

2. Define dorsal and ventral ramus

2. Ventral rami of spinal nerves from four plexuses

1.

2.

3.

4.

III. Reflexes

A. Consist of five basic components:

1.

2.

3.

4.

5.

B. Classified functionally as

1.

2.

C.
Spinal reflexes

1. Stretch Reflexes

a. Define muscle spindle

b. Define Golgi tendon organ

c. Define reciprocal inhibition

2. The Flexor Reflex

3. The crossed extensor reflex

a. Define ipsilateral

b. Define contralateral

4. Superficial Reflexes