Nerve Plexuses

Question 1

nerve plexus

Answer 1

group of nerves (anterior rami)

Question 2

intercostal nerves

Answer 2

anterior rami of spinal nerves T1-T11

Question 3

intercostal nerves innervate…

Answer 3

intercostal muscles, abdominal muscles, and overlying skin

Question 4

intercostal nerves do not…

Answer 4

form plexuses

Question 5

subcostal nerve

Answer 5

T12, arises below ribs

Question 6

cervical plexuses are formed by…

Answer 6

anterior rami of spinal nerves C1-C4

Question 7

cervical plexuses innervate…

Answer 7

anterior neck muscles, skin of neck, and parts of head and shoulders

Question 8

phrenic nerve

Answer 8

innervates the diaphragm

Question 9

brachial plexus

Answer 9

networks of nerves that supply the upper limbs (nerves C5-T1)

Question 10

axillary nerve

Answer 10

shortest, stops in shoulder region
- motor: deltoid region, teres minor

Question 11

median nerve

Answer 11

travels down anterior midline or upper limb
- anterior antebrachial region, flexors

Question 12

musculocutaneous nerve

Answer 12

right alongside the median, anterior upper limb
- innervates muscles of anterior brachial region

Question 13

radial nerve

Answer 13

travels posteriorly
- innervates posterior side of upper limb

Question 14

ulnar nerve

Answer 14

medial/pinky side
- innervates medial antebrachial region

Question 15

lumbar plexus

Answer 15

formed from anterior rami of spinal nerves L1-L4

Question 16

obturator nerve

Answer 16

innervates medial thigh, travels through obturator formen

Question 17

femoral nerve

Answer 17

innervates anterior thigh, travels down and branches off on the anterior leg

Question 18

sacral plexus

Answer 18

formed from anterior rami of spinal nerves L4-S4

Question 19

sciatic nerve

Answer 19

largest nerve in the body, travels through gluteal region, posterior thigh, and branches in crural area

Question 20

main branches of sciatic nerve

Answer 20

tibial nerve
common fibular nerve
deep fibular nerve
superficial fibular nerve