nerve supply to the upper limbs

Question 1

what is the main artery to supply th upper limb?

Answer 1

subclavian artery

Question 2

what are the 3 branches that the scalene muscle splits the subclavian artery into?

Answer 2

subclavian passes through the scalene triangle at the first rib and splits into;

• vertebral artery
• thyrocervical artery
• dorsal scapular artery

Question 3

what does the subclavian artery become after it crosses the border of the first rib?

Answer 3

axillary artery

Question 4

what are the 3 branches of the third branch of the axillary artery?

Answer 4

1. anterior circumflex
2. posterior circumflex
3. subscapular

Question 5

what do you risk trauma to if you fracture surgical neck of humerus?

Answer 5

damage to ant/post circumflex artery

Question 6

when does axillary artery become brachial artery?

Answer 6

at lower border of teres major

Question 7

what is a branch of the brachial artery you should know?

Answer 7

profunda brachii

Question 8

which artery runs in the spiral/radial groove?

Answer 8

profunda brachii artery- runs along here with the radial nerve

Question 9

what is the function of profunda brachii?

Answer 9

supplies extensors and contributes to anastamosis around elbow

Question 10

where does the brachial artery divide?

Answer 10

divides in the cubital fossa into radial and ulnar arteries

Question 12

where are you likely to experience trauma if you fracture your humerus?

Answer 12

profunda brachii

Question 13

what does the radial artery form?

Answer 13

the deep palmar arch

Question 14

what does the ulnar artery form?

Answer 14

superficial palmar arch

Question 15

what is the deep branch of the ulnar artery?

Answer 15

common interosseous artery

Question 16

what is the ulnar artery covered by?

Answer 16

FCU

Question 17

what is the radial artery covered by?

Answer 17

brachioradialis muscle

Question 18

what are the deep paired veins of the upper limb called?

Answer 18

venae comitantes

Question 19

what are the 2 superficial veins that come from the dorsal venous arch of hand, and how do they travel?

Answer 19

cephalic- lateral forearm

basilic- medial forearm

Question 20

where do basilic and cephalic veins enter?

Answer 20

axillary vein

Question 21

which nodes does all lymph from the upper arm drain into?

Answer 21

axillary nodes

Question 22

where does cephalic vein lymph drain?

Answer 22

deltopectoral node

Question 23

where does basicilic vein lymph drain?

Answer 23

cubital nodes

Question 24

what are the myotomes of the brachial plexus?

Answer 24

c5- abduction/adduction

c6/7- elbow extention and flexion

c7/8- wrist flexion/extention

c8/T1- movement of digits

Question 25

what does the lateral cord of the brachial plexus terminate as?

Answer 25

musculocutaneous and median

Question 26

what are the functions of musculocutaneous nerve?

Answer 26

motor- anterior arm

sensory- lateral arm

Question 27

what does the median cord terminate as?

Answer 27

median and ulnar nerves

Question 28

what does the medial cord terminate as?

Answer 28

median nerver

ular nerve

Question 29

what does the ulnar nerve do?

Answer 29

motor- FCU and medial FDP

sensory- medial hand and halfd4 and all d5

Question 30

what is the function of the median nerve?

Answer 30

motor- anterior forearm

sensory- lateral hand and d1-1/2d4

Question 31

what does the posterior cord terminate as?

Answer 31

radial nerve

axillary nerve

Question 32

what does the radial artery do?

Answer 32

motor-> posterior arm and forearm

sensory-> posterior arm forearm adn lat dorsum of the hand

Question 33

what is the function of the axillary nerve?

Answer 33

motor- deltoid and teres minor

sensory- badge area of the arm

Question 34

what is inside the quadrangular space?

Answer 34

axillary nerves and posterior circumflex arteries pass through here

Question 35

what are the dermatomes of the upper limb?

Answer 35