8.7 Spinal Nerves

Question 1

arise along the spinal cord from the union of the dorsal roots and ventral roots

Answer 1

spinal nerves

Question 2

spinal nerves contain axons of both sensory and somatic motor neurons

Answer 2

mixed nerves

Question 3

it is where nerves come together and then separate

Answer 3

plexuses

Question 4

3 major plexuses

Answer 4

Cervical plexus, brachial plexus, lumbosacral plexus

Question 5

originates from spinal nerves C1 to C4

Answer 5

cervical plexus

Question 6

innervates muscles attache to hyoid bone, skin of the neck, posterior portion of the head

Answer 6

cervical plexus

Question 7

innervates the diaphragm

Answer 7

phrenic nerve

Question 8

originates from spinal nerves C5 to T1

Answer 8

brachial plexus

Question 9

innervates two shoulder muscles and the skin over part of the shoulder

Answer 9

axillary nerve

Question 10

innervates all the muscles in the posterior arm, forearm, and hand

Answer 10

radial nerve

Question 11

innervates the anterior muscles of the arm and the skin over the radial surface of the forearm

Answer 11

Musculocutaneous nerve

Question 12

innervates two anterior forearm muscles and most of the intrinsic hand muscles

Answer 12

ulnar nerve

Question 13

innervates most of the anterior forearm muscles and some of the intrinsic hand muscles

Answer 13

median nerve

Question 14

originates from spinal nerves L1 to S4

Answer 14

Lumbosacral plexus

Question 15

innervates muscles of the medial thigh and the skin over the same region

Answer 15

obturator nerve

Question 16

innervates the anterior thigh muscles and the skin over the anterior thigh and the medial side of the leg

Answer 16

femoral nerve

Question 17

innervates the posterior thigh muscles, the anterior and posterior leg muscles, and most of the intrinsic foot muscles

Answer 17

tibial nerve

Question 18

innervates the muscles of the lateral thigh and leg and some intrinsic foot muscles, skin over the anterior and lateral leg and the dorsal surface of the foot

Answer 18

common fibular nerve

Question 19

formed when the tibial and common fibular nerves are bound togather within a connective tissue sheath

Answer 19

sciatic nerve