Week 5 Clinical Anatomy of the Upper Limb - some key points

Question 1

nerve for trapezius?

Answer 1

accessory - CN11

Question 2

nerve(s) for subscapularis?

Answer 2

(upper and lower) subscapular nerves

Question 3

what does the axillary nerve supply?

Answer 3

deltoid
and
teres minor

Question 4

where does the biceps brachii insert?

what is the nerve supply?

Answer 4

inserts into the radial tuberosity ( ie. it travels across the elbow to insert into the radius)

musculocutaneous nerve supplies all the anterior arm muscle

• biceps brachii
• coracobrachialis
• brachialis

Question 5

there are 3 ligaments at the elbow: medial, lateral and annular. what does the annular ligament do?

Answer 5

it wraps around the radial head

Question 6

what does tennis elbow affect?

Answer 6

the extensor muscles!!
they insert into the lateral epicondyle
ie lateral epicondylitis

Question 7

what does the golf elbow effect? other name?

Answer 7

the flexor muscles!!

this is medial epicondylitis

Question 8

what innervates the 7 interossei muscles of the hand?

Answer 8

the ulnar nerve

Question 9

describe the 2 types of interossei muscles and their function

Answer 9

DAb and PAd
dorsal abductors x 4
palmar adductors x 3

Question 10

what is the name for the 4 muscles that link the flexor and extensor muscles ( in the hands)

what is their nerve supply?

Answer 10

the lumbrical muscles
lateral (2nd and 3rd) - median nerve
medial (4 and 5) - ulnar nerve

Question 11

what is inside the carpal tunnel?

Answer 11

4 x FDP tendons
4 x FDS tendons
1 x FPL tendon - pollicis longus
median nerve

Question 12

what supplies the flexor digitorum profundus muscles of the digits?

what supplies the flexor digitorum superficialis muscles?

Answer 12

median nerve for lateral 2rd, 3rd
ulnar nerve for medial 4th,5th for FDP!!!

FOR FDS = ALL MEDIAN NERVE

Question 13

what supplies the lumbrical muscles of the hand?

Answer 13

median nerve for lateral 2rd, 3rd

ulnar nerve for medial 4th,5th

Question 14

what biceps head is more important - short or long?

Answer 14

The short head

Question 15

3 origins of the deltoid

1 insertion

Answer 15

clavicle, acromion, spine of scapula

deltoid tuberosity of the medial humerous

Question 16

2 origins of biceps brachii

1 insertion

Answer 16

labrum/glenoid of joint.. and coracoid process of scapula

inserts in the radial tuberosity (ie. travels right down to past the elbow to the radius)

Question 17

what is a SLAP tear?

Answer 17

tear of the top of the long head of the biceps brachii

may also tear at the bottom – big bulging bulge

Question 18

there are 3 “pollicis” muscles in the thenar region of the hand. what are they called, what action do they allow and what nerve supplies??

Answer 18

all median nerve thank the lord easy peasy

1. Opponens pollicis - touch thumb to pinky (most lateral)
2. Abductor pollicis brevis - abduct away from hand
3. Flexor pollicis brevis - flex (bend) thumb

Question 19

what is the important muscle in the hypothenar region?

and what supplies it?

Answer 19

abductor digiti minimi

ulnar nerve supply

Question 20

name the 4 rotator cuff muscles

Answer 20

teres minor
suprascapularis
subscapularis
infrascapularis

Question 21

what nerve supplies the posterior arm (and what is the 1 muscle) ?

Answer 21

nerve = Radial nerve
muscle = triceps brachii

Question 22

nerve supply

• suprascapular nerve for suprascapularis + infrascapularis
• subscapular nerve for subscapularis
• What nerve for teres minor?

Answer 22

teres minor = axillary nerve

Question 23

There are 4 muscles in the superficial layer of the anterior forearm. what are they?

Answer 23

1. pronator teres
2. flexor carpi radialis
3. palmaris longus
4. flexor carpi ulnaris

Question 24

what 1 muscle makes up the intermediate layer of the anterior forearm?

Answer 24

flexor digitorum superficialis.

Question 25

what 3 muscles make up the deep layer of the anterior forearm?

Answer 25

1. flexor pollicis longus
2. flexor digitorum profundus
3. pronator quadratus

Question 26

“median nerve for lateral 2rd, 3rd
ulnar nerve for medial 4th,5th”

what 2 sets of muscles is this true for?

Answer 26

Flexor digitorum profundus of the digits

lumbrical muscles of the digtits