ch. 14 nerve plexuses

Question 1

How many nerve plexuses are there?

Answer 1

4

Question 2

What is the cervical plexus?

Answer 2

Found in the neck region formed from ventral rami of first 4 or 5 cervical nerves

Question 3

What is the phrenic nerve?

Answer 3

out of cervical plexus to diaphragm muscle to stimulate contraction for breathing

Question 4

Where is the barchial plexus located?

Answer 4

in lower neck and armpit regions formed from ventral rami c5-t1; most nerves from this plexus innervate upper limbs for sensory and motor functions

Question 5

what is the musculocutaneous nerve?

Answer 5

biceps brachi, brachialis muscles and skin

Question 6

What is the ulnar nerve?

Answer 6

To flexor carpi ulnaris muscle and skin

Question 7

What is the radial nerve?

Answer 7

to triceps brachii muscle and skin

Question 8

where is the lumbar plexus?

Answer 8

in posterior abdominal wall formed from ventral rami l1-l4

Question 9

what is the sciatic nerve?

Answer 9

formed from tibial and common fibular nerves from sacral plexus. some branches go to hamstring muscles

Question 10

what are intercostal nerves?

Answer 10

are not from a nerve plexus; extended from ventral rami t10t12