forearm Flashcards
what are the intrinsic muscles of the hand?
all for one and one for all- abductor pollicis longus flexor pollicis brevis opponens pollicis adductor pollicis opponens digiti minimi flexor digiti minimi abductor digiti minimi
what are the carpal bones?
some lovers try positions that they can't handle - scaphoid lunate triquetrium pisiform trapezium trapezoid capitate hamate
what are the superficial flexor/pronator muscles?
pass fail pass fail pronator teres flexor carpi radialis palmaris longus flexor carpi ulnaris
what makes up the intermediate layer of flexors/pronators?
flexor digitorum superficialis
what makes up the deep layer of flexors/pronators?
flexor digitorum profondus, flexor pollicis longus, pronator quadratus
what does the supinator do? which nerve innervates it?
action: supinates forearm and rotates radius to turn Palm anteriorly or superiorly.
innervation: deep radial nerve.
where does the supinator attach?
proximal: lateral epicondyle of humerus, supinator fossa and cress of ulna.
distal: lateral, posterior and anterior surfaces of radius.
what does extensor indicis do? and what nerve innervates it?
action: extends second digit and helps extend hand at wrist.
innervation: posterior interosseus nerve.
where does extensor indicis attach?
proximal: posterior surface of ulna and interosseus membrane.
distal: extensor companion of 2nd digit.
what does abductor pollicis longus do? and what nerve innervates it?
action: abducts thumb and extends it at carpometacarpal joint.
innervation: posterior interosseus nerve.
what are the attachments of abductor pollicis longus?
proximal: posterior surface of ulna, radius and interosseus membrane
distal: base of first metacarpal.
what does extensor pollicis longus do? and which nerve innervates it?
action: extends distal phalynx of thumb at interphalangeal joint and extends metacarpophalangeal and carpometacarpal joints.
innervation: posterior interosseus nerve.
what does extensor pollicis brevis do? and what nerve supplies this muscle?
action: extends proximal phalanx of thumb at metacarpophalangeal joint and extends carpometacarpal joint.
innervation: posterior interosseus nerve.
where does extensor pollicis brevis attach?
proximal: posterior surface of radius and interosseus membrane.
distal: base of proximal phalanx of thumb.
which hand muscles are innervated by median nerve?
LLOAF lumbricals 1 and 2 opponens pollicis abductor pollicis brevis flexor pollicis brevis
