shoulder plexus

Question 1

Brachial plexus is made up of what?

Answer 1

Ventral rami of C5 to T1

Question 2

Brachial plexus is organized into five parts

Answer 2

5 rami: C5-8, T1

3 trunks: superior, middle, inferior

6 divisions: 3 ant, 3 post

3 cords: medial, lateral, posterior

5 terminal branches: Auxiliary, musculocutaneous, radial, median, ulnar


Question 3

What forms superior trunk?

Answer 3

C5-6

Question 4

What forms middle trunk?

Answer 4

C7

Question 5

What forms inferior trunk?

Answer 5

C8-T1

Question 6

T/F each trunk splits into 1 anterior and 1 posterior division for a total of 3 anterior and 3 posterior divisions

Answer 6

T

Question 7

Three anterior divisions supplied the _____ part of the UE

Answer 7

Ant (flexor/pronators)

Question 8

Three posterior divisions supplied the _____ part of the UE

Answer 8

Post (extensors/supinators)

Question 9

Cords are named according to their position in relation to the ___ artery behind pectoralis minor

Answer 9

Axillary

Question 10

Lateral cord is formed by the anterior division of the superior and middle trunks. What are the spinal levels?

Answer 10

C5-7

Question 11

Medial cord is formed by the anterior division of the inferior trunks. What are the spinal levels?

Answer 11

C8-T1

Question 12

Posterior cord is formed by the posterior division of the all 3 trunks. What are the spinal levels?

Answer 12

C5-T1

Question 13

Musculocutaneous nerve C5 to C7 I nnervates what?

Answer 13

Ant arm: 
Biceps brachii
Brachialis
Coracobrachialis
Lat cutaneous nerve of forearm

Question 14

1/2 median nerve C5-T1 innervates?

Answer 14

All musc of the anterior forearm except flexor carpi ulnaris and half 1/2 digitorum profundus

Musc thenar eminence via median recurrent nerve

Lumbricals 1&2

Cutaneous to thenar eminence and digits 1,2,3,1/2 4 (palmer cutaneous branch)

Question 15

Lateral pectoral nerve C5 to C7 innervation?

Answer 15

Pectoralis major

Question 16

Ansa pectoralis

Answer 16

Bridge from lateral cord/lateral pectoral nerve to the medial cord/medial pectoral nerve

Question 17

Branches of ulnar nerve C8 to T1 innervates?

Answer 17

Flexor carpi ulnaris and 1/2 flexor digitorum profundus

All intrinsic muscles of hand except thenar muscles in lumbricals 1&2

Cutaneous to digit 5, 1/2 of 4 palmer and dorsal edge of hand

Question 18

Medial pectoral nerve nerve C7-T1 innervates?

Answer 18

Pectoralis major/minor

Question 19

Axillary nerve C5 to C6 innervates?

Answer 19

Deltoid

Teres minor

Cutaneous to upper lateral arm via upper lateral cutaneous nerve of arm

Question 20

Radial nerve see (C5-T1)innervates?

Answer 20

Triceps brachii, anconeus, forearm extensors, brachioradialis

Cutaneous to arm and forearm

Lower lateral cutaneous nerve of the arm

Posterior cutaneous nerve of the arm

Posterior cutaneous nerve of the forearm

Back of lateral hand via superficial radial nerve

Question 21

Upper subscapular nerve C5-C6 innervates?

Answer 21

Subscapularis

Question 22

Lower subscapular nerve C5-C7 innervates?

Answer 22

Subscapularis

Teres major

Question 23

Neko dorsal nerve C6-C8 innervates?

Answer 23

Latissimus dorsi

Question 24

Muscular cutaneous pierces?

Answer 24

Coracobrachialis

Question 25

Median nerve goes through two heads up of what muscle?

Answer 25

Pronator teres

Question 26

Ulnar nerve goes through two heads of what muscle?

Answer 26

Flexor carpi ulnaris

Question 27

Deep branch of radial nerve pierces what?

Answer 27

Supinator

Question 28

Axillary nerve goes through what space?

Answer 28

Quadrangular

Question 29

Thyrocervical trunk consists of?

Answer 29

Inferior thyroid artery
Transverse cervical artery
Suprascapular artery

Question 30

What arteries make up scapular anastomoses

Answer 30

Suprascapular
Dorsal scapular
Circumflex scapular

Question 31

3 parts of axillary n

Answer 31

Superior thoracic
Thoracoacromial, lat thoracic
Ant/post circumflex humeral, Subscapular