Anatomy: Upper Limb Flashcards
what is the main important action of the rotator cuff muscles?
stabilise the head of the humerus in the glenoid
what are the four muscles of the rotator cuff?
supraspinatus
infraspinatus
teres minor
subscapularis
where do the rotator cuff muscles insert?
greater tuberosity
subscapularis = lesser tuberosity
how much of the humeral head is usually in contact with the glenoid fossa?
around a third
what are the compartments of the arm?
anterior
posterior
what are the compartments of the forearm?
anterior
lateral
posterior
what is the arterial supply to the anterior arm?
brachial artery
what is the venous drainage to the anterior arm?
brachial vein
what nerve supplies the muscles of the anterior arm?
musculocutaneous
what is the arterial supply to the posterior arm?
profunda brachii
what is the nerve supply to the posterior arm?
radial nerve
what is the arterial supply to the anterior forearm?
radial artery
ulnar artery
what is the nerve supply to the anterior forearm?
median nerve
what is the arterial supply to the posterior forearm?
interosseous artery
what is the nerve supply to the posterior forearm?
radial nerve
what is the arterial supply to the hand?
deep and superficial palmar arches
what is the nerve supply to the hand?
ulnar nerve
median nerve
what three muscles make up the anterior compartment of the arm?
biceps brachii
brachialis
coracobrachialis
what are the actions of the anterior compartment of the arm?
flexion of the arm and forearm
what muscle makes up the posterior compartment of the arm?
triceps brachii
what are the actions of the posterior compartment of the arm?
extension of the arm and forearm
what are the three layers of the anterior compartment of the forearm?
superficial
intermediate
deep
what four muscles make up the superficial layer of the anterior compartment of the forearm?
pronator teres
flexor carpi radialis
palmaris longus
flexor carpi ulnaris
what muscle makes up the intermediate layer of the anterior compartment of the forearm?
flexor digitorum superficialis