Peripheral Nervous Sysem (PNS)

Question 1

What are the parts of the PNS?

Answer 1

Cranial nerves and ganglia

Spinal nerves and ganglia/plexus

Question 2

What is in the cranial nerves and ganglia

Answer 2

12 pairs of cranial nerves

Question 3

How do he cranial nerves exit

Answer 3

Through the foramina

Question 4

What is in the spinal nerves and ganglia/plexuses (broken down)

Answer 4

31 pairs of spinal nerves so

8 cervical, 12 thoracic, 5 lumbar, 5 sacral, 1 coccygeal

Question 5

How do spinal nerves exit?

Answer 5

Through intervertebral foramina

Question 6

Bundle of nerve fibers and axons are supported by what? What is the relationship with CNS?

Answer 6

Connective tissue

Conduct info to the CNS

Question 7

Is it protected or unprotected? By what

Answer 7

Encased in fibrous sheaths so basically not protected

Question 8

Anterior root of spinal nerves carry what

Answer 8

Carry motor information away from CNS (EFFERENT)

Question 9

Posterior root of spinal nerves carry what

Answer 9

Information regarding sensation to CNS (AFFERENT)

Question 10

What are ganglia? What do they give rise to?

Answer 10

Clusters or swellings of cells that give rise to peripheral and central nerve fibers

Question 11

What are ganglia divided into?

Answer 11

Ganglia and autonomic ganglia