Upper Extremity

Question 1

once the axillary artery passes out from under the teres major it is called the

Answer 1

brachial artery

Question 2

what branch does the brachial artery giver off

Answer 2

profunda brachii

Question 3

what does the profunda brachii artery run with

Answer 3

the radial nerve

Question 4

what does the brachial artery in the arm run with

Answer 4

median and ulnar nerve *ulnar curves of medially near medial epicondyle

Question 5

what does the brachial artery split into and where

Answer 5

ulnar and radial arteries in the cubital fossa

Question 6

what are the main veins in the arm and where do they run

Answer 6

1. cephalic with radial side

2. basilic on ulnar side

Question 7

where do cephalic and basilic veins come together

Answer 7

median cubital in the cubital fossa

Question 8

what vein runs down the anterior forearm

Answer 8

antebrachial

Question 9

what does the axillary sheath contain

Answer 9

axillary artery and vein, cords of brachial plexus as it passes through the axilla

Question 10

what is the lateral cord composed of

Answer 10

anterior branches of the superior and middle trunks.

Question 11

what is the main branch off the lateral cord

Answer 11

musculocutaneous (C5-7)

Question 12

what is the medial cord composed of

Answer 12

anterior branches of the inferior trunk

Question 13

what is the main branch of the medial cord

Answer 13

the ulnar nerve (c8-t1)

Question 14

what is the posterior cord composed of

Answer 14

posterior branches of the superior, middle, and inferior trunks

Question 15

what is the main branch of the posterior cord

Answer 15

axillary (C5/6 WEIRD!) and radial (C5-T1)

Question 16

what does the medial cord branch to (smaller divisions)

Answer 16

medial pectoral, medial cutaneous nerve of the forearm (median antebrachial), medial cutaneous nerve of the arm (medial branchial)
peeing can feel agreeable

Question 17

what does the posterior cord branch to (smaller divisions)

Answer 17

upper subscapular (C5/6 WEIRD!)
thoracodorsal (C6-8 WEIRD!)
lower subscapular (C5-C6 WEIRD!)
*Usually students tend to listen sharply*

Question 18

what does the lateral branch to (smaller divisions)

Answer 18

dorsal scapular (C5, from ramus) 
suprascapular (C5/6 from trunk) 
nerve to subclavius (C5/6 from trunk) 
lateral pectoral (C5-7 from cord)
*dinner is to supper as soon is to late*

Question 19

what does the axillary nerve innervate

Answer 19

deltoid and teres minor muscles (senses lateral aspect of the arm)

Question 20

what does the musculocutaneous nerve innervate

Answer 20

all muscles in anterior compartment (flexor) in arm

Question 21

what does the median nerve innervate

Answer 21

flexor muscles of forearm EXCEPT 1.5

flexor carpi ulnaris and medial half of flexor digitorum profundus

Question 22

what nerve runs in carpal tunnel and gets compressed

Answer 22

median

Question 23

what does the ulnar nerve innervate

Answer 23

intrinsic muscles of the hand and flexor carpi ulnaris and ulnar portion of flexor digitorum profundus (takes the 1.5 away from median)

Question 24

where does the ulnar nerve run

Answer 24

Guyon’s cancal - passes between pisiform and hook of hamate

Question 25

what does thoracodorsal nerve innervate

Answer 25

latissimus dorsi

Question 26

what does upper subscapular nerve innervate

Answer 26

superior part of subscapularis

Question 27

what does lower subscapular nerve innervate

Answer 27

teres major and inferior part of subscapularis

Question 28

what does radial nerve innervate

Answer 28

extensor muscles of posterior compartments of upper limb and forearm ALSO brachioradialis which is a flexor but in the posterior compartment

Question 29

what does compression of the radial nerve cause

Answer 29

saturday night palsy with inability to extend elbow and causes flexed wrist

Question 30

where does the musculocutaneous run

Answer 30

between biceps and brachialis

Question 31

where does the radial nerve run

Answer 31

with profunda brachii artery between brachialis and triceps

Question 32

where do median and ulnar nerve travel

Answer 32

either side of brachial artery

Question 33

what is the quadrangular space

Answer 33

in upper limb bounded by long head of triceps and humerus, contains axillary nerve and posterior circumflex humeral artery

Question 34

what is the triangular space

Answer 34

bounded by long and lateral heads of triceps, contains profunda brachii artery and radial nerve

Question 35

ABductors of the arm

Answer 35

``` 15 degrees: supraspinatus (suprascapular nerve) Then Deltoid (axillary nerve) Serratus anterior completes to swing scapula away (long thoracic nerve) ```

Question 36

ADductors of the arm

Answer 36

``` Latissimus dorsi (thoracodorsal nerve) Pec major (medial and lateral pec nerve) Teres major (lower subscapular nerve) ```

Question 37

Medial rotators of the arm

Answer 37

``` subscapularis (upper and lower subscapular) pec major (medial and lateral pec nerve) ```

Question 38

lateral rotators of the arm

Answer 38

``` infraspinatus (suprascapular) teres minor (axillary nerve) ```

Question 39

arm flexor

Answer 39

biceps brachii | coracobrachialis

Question 40

arm extensors

Answer 40

deltoid (posterior part) | latissimus dorsi

Question 41

anterior arm flexors

Answer 41

ALL innervated by musculocutaneous Biceps brachi (flexes mostly shoulder, some forearm, wants to supinate) Coracobrachialis Brachialis