Ch.13

Question 1

Peripheral Nervous System (PNS)

Answer 1

bundles of axons outside of CNS, along with associated connective tissues and blood vessels

Question 2

Cranial nerves

Answer 2

arise from the brain

Question 3

Spinal nerves

Answer 3

arise from the spinal cord

Question 4

Sympathetic

Answer 4

“fight or flight” directs autonomic bodily responses during stress

Question 5

Parasympathetic

Answer 5

“rest and digest” regulates autonomic bodily functions during rest

Question 6

Cranial Nerves continued

Answer 6

• 12 PAIRED SETS numbered from the front of the brain to the back.
• The LOWER numbered cranial nerves are located towards the FRONT OF THE BRAIN, while the HIGHER numbered nerves are located TOWARDS THE BRAIN STEM AND SPINAL CORD

Question 7

Vagus

Answer 7

controls body functions specifically related to digestion and heart rate maintaining the basic functions of life

Question 8

Spinal Nerves

Answer 8

31 pairs of spinal nerves
- named and numbered by region and level of the spinal cord they pertain to regions: cervical (5), thoracic (12), lumbar (5), sacral (5), coccygeal (1)

Question 9

Principle Plexus

Answer 9

-network of various numbers of axons form adjacent nerves

• cervical (C1-C5) , Brachial (C5-T1), Lumbar(L1-L14), Sacral(L4-L5, S1-S4)