The Hand Flashcards
What is the action of the dorsal interossi musckes?
They arise from the matacarpals and insert on to the proximal phalanges
They act to abduct the fingers
What is the action of the opponens minimi?
Arises from the carpal bones and flexor retinaculum
It opposes the thumb
What is the abductor digiti minimi?
Arises from the carpal bones and inserts on to the proximal phalynx of the finger
Abducts the little finger
What is the flexor digiti minimi?
Arises from the carpal bones and inserts on to the proximal phalynx of the finger
Flexes the finger
What are the lumbricals?
Arise from the flexor digitorum profundus and insert on to the extensor compartment
Flex the metacarpophalangeal joints
What is the opponens pollicis?
Arises from the carpal bones and inserts onto the thunmbs radial side
It opposes the thumb
What is the abductor pollicis brevis?
Arises from the carpals and inserts on to the proximal phalange of the thumb
Abducts the thumb and is used in extension and opposition
What is the flexor pollicis brevis?
Arises from the carpal bones and inserts on to the proximal phalange of the thumb
It flexes the thumb
What is the adductor pollicis?
Arises from the metacarpals and inserts on to the medial side of the proximal phalange of the thumb
Adducts the thumb
The tendons of which two muscles make up the antomical snuff box?
Extensor pollicis longus (top)
Extensor pollicis brevis (bottom)
Which nerve supplies the front of the forearm?
The median nerve
Which muscles on the front of the forearm are not supplied by the median nerve?
Brachioradialis
Flexor carpi ulnaris
Flexor digitorum profundus bellies of the little and ring finger
Which nerve innervates the posterior forearm?
The radial nerve
Which nerve innervates the intrinsic muscles of the hand?
The ulnar nerve
Which nerve supplies the muscles of the thumb, thenar eminiscence, middle and index finger?
The median nerve
