week 5/1 - LARGE UPPER LIMB NERVES

Question 1

List the large nerves of the UL

Answer 1

• axillary
• radial
  -musculatneous
• median
• ulna
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Question 2

identify the positions of these nerves

Answer 2

musculocutaneous > lateral

Question 3

axillary

Answer 3

posterio

Question 4

radial

Answer 4

posterior

Question 5

median

Answer 5

medial

Question 6

ulnar

Answer 6

medial

Question 7

where does the axillary nerve arise from

Answer 7

• posterior cord, segments C 5 6

Question 8

where does it exit the axilla from

Answer 8

through the quadrangular space and enters the shoulder region

Question 9

the muscles it innervates - axillary vein

Answer 9

deltoid and teres minor

Question 10

axillary nerve test

Answer 10

shoulder joint abduction

Question 11

where does the radial artery arise from

Answer 11

• posterior cord, segments C 5 6 7 8

Question 12

where does it exit the axilla from (radial vein)

Answer 12

on latissimus dorsi, passes initially between the long and lateral head of triceps than in the radial groove

Question 13

where does the radial vein emerge

Answer 13

between brachiakis and brachioradialis in the cubital fossa, the deep muscular branch passes in supinator of the posterior compartment of the forearm

Question 14

where does the superficial branch of the radial vein travel to

Answer 14

Along the forearm beneath the brachioradialis with the radial artery then crosses the lateral hand region to the end on the dorsum of the hand

Question 15

muscles the radial vein innervates

Answer 15

all the posterior and forearm muscles

Question 16

cutaneous (radial vein)

Answer 16

posterior arm and forearm, lateral dorsum of the hand and part of the thenar eminence

Question 17

major branches of the radial vein

Answer 17

muscular, posterior cutaneous of the arm and forearm, deep, superficial, posterior interosseous

Question 18

radial vein test

Answer 18

elbow joint extension, wrist joint extension and thumb extension

Question 19

MUSCULOCUTANEOUS NERVE

Question 20

where does the MCN arise from

Answer 20

• lateral cord, segments c 5 6 7

Question 21

where does it pass in the axillary

Answer 21

passes through coracobrachialis, then it travels in the anterior compartment of the arm laterally between brachailis and biceps, at the elbow it lies in the lateral roof of the cubital fossa

Question 22

where does the MCN then travel to after passing the axillary

Answer 22

• lateral side of the forearm as the lateral cutaneous nerve of the forearm

Question 23

muscles MCN innervates

Answer 23

all anterior compartment

Question 24

test of MCN

Answer 24

Flexion of elbow joint

Question 25

MEDIAN NERVE

Question 26

where does the median nerve arise from

Answer 26

both medial and lateral cords

Question 27

where does the median nerve proceed to

Answer 27

• down the arm in the anterior compartment between brachialis and biceps along with the brachial artery, at the elbow it lies in the cubital fossa medial to the artery

Question 28

where does the median nerve pass through

Answer 28

pronator teres and along the forearm beneath FDS

Question 29

which muscles does the median nerve innervate

Answer 29

= all the anterior compartment except for FCU

Question 30

ULNA NERVE

Question 31

where does ulna nerve arise from

Answer 31

medial cord of the brachial plexus

Question 32

where is it located and where does it travel to - ulna nerve

Answer 32

• initially in the anterior compartment of the arm
• passes > into the posterior compartment then it travels onto the medial head of triceps, at the elbow it lies behind the medial epicondyle

Question 33

where does it pass through -ulna

Answer 33

through FCU, and proceeds down the forearm beneath FCU along with the radial artery

Question 34

NERVES BRANCHING AND INNERVATING

Question 35

which nerves innervate the arm

Answer 35

• upper lateral > axillary n.
• lower lateral and posterior > radial nerve, MCN and medial nerve

Question 36

which nerve innervates the forearm

Answer 36

• lateral > musculocutaneous nerve
  medial MCNF
  posterior > radial nerve