AD 9 anterior arm forearm Flashcards
What are the 2 compartments of the arm
Anterior and posterior
what are the 3 muscles of the anterior arm
coracobrachialis, brachialis, biceps brachii
what is the origin and insertion of coracobrachialis
Coracoid process to the mid shaft of the humerus
What is the action of coracobrachialis
flexor of arm at glenohumeral joint
What is the nerve supply of coracobrachialis
musculocutaneous nerve c5, c6, c7
What is the origin and insertion of brachialis
anterior humerus to tuberosity of ulna
What is the action of brachialis
flexor of forearm at elbow joint
What is the nerve supply of brachialis
musculocutaneous nerve c5, c6, and little bit of radial nerve c7
What is the origin and insertion of biceps brachii
short head - coracoid process. long head - supraglenoid tubercule of scapula. insertion is radial tuberosity
What is the action of biceps brachii
flexor of forearm at elbow joint, supinator of forearm, accessory flexor of forearm at GH joint
what is the funny bone
ulnar nerve runs posteriorly to medial epicondyle of humerus
how does the ulnar nerve run from arm to forearm
runs in anterior compartment, then pierces posterior compartment, runs posteriorly to medial epicondyle of humerus
what flexor does the ulnar nerve run through to reach anterior compartmeent of forearm
flexor carpi ulnaris
Entrapment of the ulnar nerve is the cubital tunnel is what
cubital tunnel syndrome
What is the medial boundary of cubital tunnel
pronator teres
what is the lateral boundary of cubital tunnel
brachioradialis
What is the superior boundary of cubital tunnel
imaginary horizontal line between two epicondyles of humerus
What are the superficial contents of cubital fossa
median cubital vein, cephalic vein, basilic vein, distal tendon and aponeurosis of biceps brachii
What are the deep contents of cubital fossa, medial to lateral
median nerve, brachial artery, radial nerve
What are the muscles in the superficial layer of anterior compartment of forearm
pronator teres
palmaris longus
flexor carpi radialis
flexor carpi ulnaris
What is the common attachment point for superficial layer anterior forearm muscles
common flexor tendon to medial epicondyle of humerus
What are the muscles in intermediate layer of anterior compartment of forearm
flexor digitorum superficialis
What is the attachment point for intermediate layer
medial epicondyle of humerus, coronoid process of ulna and radial head
What are the muscles in deep layer of anterior compartment of forearm
flexor digitorum profundus
flexor pollicis longus
pronator quadratus
