Brachial plexus

Question 1

Brachial plexus branching

Answer 1

1. 5 ventral rami (C5-T1)
2. 3 trunks (Upper, middle, lower)
3. ant. and post. divisions
4. 3 cords =
   a. lateral (ant. upper and ant. middle);
   b. medial (ant. lower);
   c. posterior (post. all 3)
5. main nerves

Question 2

Musculocutaneous nerve

Answer 2

lateral cord

biceps brachii, coracobrachialis, brachialis

Question 3

Ulnar

Answer 3

medial cord

intrinsic hand muscles

Question 4

Radial

Answer 4

posterior cord

post. compartments of arm and forearm

Question 5

Axillary

Answer 5

post. cord

deltoids, teres minor

Question 6

Median

Answer 6

lateral and median cords

flexors of wrist, fingers and thumbs

Question 7

dorsal scap

Answer 7

C5

rhomboids and levator scapulae

Question 8

suprascap

Answer 8

c5-c6

supra and infraspinatus

Question 9

long thoracic

Answer 9

c5-c7

serratus anterior

Question 10

medial pectoral nerve

Answer 10

c8-t1

pec minor and major

Question 11

lateral pec nerve

Answer 11

c5-c8

pec major

Question 12

thoracodorsal

Answer 12

post. cord

lat dorsi

Question 13

subscap

Answer 13

post cord

subscap and teres minor