Anterior Arm, Anterior Forearm and Cubital Fossa

Question 1

what separates the posterior and anterior muscle compartments in the arm?

Answer 1

humerus and medial and lateral intermuscular septae

Question 2

name the muscles of the anterior arm

Answer 2

biceps brachii (2 heads)

coracobrachialis

brachialis

Question 3

what nerve supplies the muscles in the anterior arm?

Answer 3

musculocutaneous

Question 4

what movement do all the anterior arm muscles do?

Answer 4

flex forearm

Question 5

describe the position of corcaobrachialis

Answer 5

deep to biceps brachii and lateral to brachialis

Question 6

what does the brachial artery divide into and where?

Answer 6

into radial and ulnar arteries

in cubital fossa, opposite neck of radius under the bicipital aponeurosis

Question 7

what does the musculocutaneous nerve emerge into lateral of the biceps?

Answer 7

lateral cutaneous nerve of forearm

Question 8

describe the course of the median nerve?

Answer 8

runs distally in arm on lateral side of brachial artery until it reaches the middle of the arm and contacts brachialis

then descends in cubital fossa where it lies deep to biceps aponeurosis and median cubital vein

Question 9

funny bone

Answer 9

ulnar nerve

Question 10

what causes cubital tunnel syndrome?

Answer 10

when the ulnar nerve gets trapped at cubital tunnel

Question 11

what is the cubital fossa?

Answer 11

triangular space between skin and anterior aspect of capsule of elbow joint

Question 12

superior boundary of cubital fossa?

Answer 12

transverse line between epicondyles of humerus

Question 13

medial boundary of cubital fossa?

Answer 13

pronator teres

Question 14

lateral border of cubital fossa?

Answer 14

brachioradialis

Question 15

superficial components of cubital fossa?

Answer 15

medial cubital vein
cephalic vein
basilic vein

Question 16

deep contents of cubital fossa?

Answer 16

median nerve (medially)
brachial artery
radial nerve (laterally)

Question 17

what nerve supplies the muscles in the anterior forearm?

Answer 17

median nerve

except for flexor carpi ulnaris and medial part of flexor digitorum profundus which are both ulnar nerve

Question 18

name the muscles in the superficial layer of the anterior forearm?

Answer 18

pronator teres
palmaris longus
flexor carpi radialis
flexor carpi ulnaris

Question 19

name the muscles in the intermediate layer of the anterior forearm?

Answer 19

flexor digitorum superficialis (has 4 muscle bellies/tendons fore the 4 medial digits)

Question 20

name the muscles in the deep layer of the anterior forearm

Answer 20

flexor digitorum profundus
flexor pollicus longus
pronator quadratus

Question 21

what is the common proximal attachment for the muscles in the superficial layer of the anterior forearm?

Answer 21

medial epicondyle of humerus by a common flexor tendon

Question 22

what is the common proximal attachment for the muscles in the intermediate layer of the anterior forearm?

Answer 22

distal humerus, coronoid process of ulna and radial head

Question 23

what is the common distal attachment for the muscles in the deep layer of the anterior forearm?

Answer 23

the muscles in the intermediate layer

Question 24

general actions of muscles in anterior forearm?

Answer 24

flexion, abduction, adduction of carpus
flexion of finger
flexion of thumb
pronation of forearm and prox and dist radioulnar joints

Question 25

what does the palmar carpal ligament and flexor retinaculum at the wrist do?

Answer 25

hold the long tendons of muscles in place at the wrist joint

Question 26

what nerve supplies the skin of the central palm?

Answer 26

palmar cutaneous branch of median nerve

Question 27

what nerve is trapped in carpal tunnel syndrome?

Answer 27

median nerve

Question 28

what 2 cutaneous branches does the ulnar nerve give rise to?

Answer 28

palmar cutaneous branch | dorsal cutaneous branch

Question 29

what nerve supplies skin of dorsum medial to axis of 4th digit?

Answer 29

dorsal cutaneous branch of ulnar nerve

Question 30

medial epicondylitis?

Answer 30

golfers elbow

Question 31

lateral epicondylitis?

Answer 31

tennis elbow

Question 32

what side of the arm is the cephalic vein on?

Answer 32

lateral

Question 33

what side of the arm is the basilic vein on?

Answer 33

medial

Question 34

what does the median cubital vein join?

Answer 34

the cephalic and basilic vein