Upper limb 3 Flashcards
what are the superficial group of muscles of the forearm?
flexor carpi radialis
flexor carpi ulnaris
palmaris longus
pronator teres
what is the common origin of the flexors and extensors of the forearm?
medial epicondyle - flexors
lateral epicondyle - extensors
what are the functions of the flexor carpi radialis and ulnaris?
FCR - flexes the elbow and wrist, abducts the wrist
FCU - flexes the elbow and wrist, adducts the wrist
what is the innervation of the;
- flexor carpi ulnaris
- flexor carpi radialis
- palmar longus
- pronator teres ?
all supplied by median nerve
except flexor carpi ulnaris - supplied by ulnar nerve
what are the actions of the brachioradialis muscle?
flexion of the elbow joint
pronation and supination of forearm
what is the nerve supply of the brachioradialis?
radial nerve
what are the intermediate muscle and deep muscles of the forearm?
flexor digitorum superficialis (intermediate)
flexor digitorum profundus
pronator quadratus
flexor pollicis longus
what is the nerve innervation of the;
- flexor digitorum superficialis
- flexor digitorum profundus
- pronator quadratus
- flexor pollicis longus ?
all supplied by median nerve
except flexor digitorum profoundus; medial half supplied by median nerve and lateral half supplied by ulnar nerve
what is the relationship of the brachial artery and the median nerve within the cubital fossa?
median nerve lies medially to the brachial artery
what muscles of the forearm aren’t supplied by the median nerve?
flexor carpis ulnaris
medial half of the flexor digitorum profundus
in the forearm, what is the relationship of the ulnar nerve and artery?
the ulnar nerve lies medial to the ulnar artery
at what landmark does the brachial artery split into ulnar and radial?
the neck of the radius
what structures is in the carpal tunnel?
4 tendons of the flexor digitorum superficialis
4 tendons of the flexor digitorum profundus
1 tendon of the flexor policies longus
median nerve
what is the name of the fascia that is in the palm of the hand and what muscle is continuous with the fascia?
palmar aponeurosis
palmaris longus muscle
what are the thenar muscles of the hand?
abductor pollicis brevis
flexor pollicis brevis
opponens pollici
what nerve innervates the thenar muscles of the hand?
median nerve (recurrent branch)
what are the hypothenar muscles of the hand?
abductor digiti minimi
flexor digiti minimi
opponens digiti minimi
what nerve innervates the hypothenar muscles?
ulnar nerve
what are the two heads of the adductor pollicis and what is its innervation?
transverse and oblique heads
ulnar nerve
where does the lumbricals of the hand originate?
tendons of the flexor digitorum profundus
what is the nerve innervation of the lumbricals?
medial 2 innervated by ulnar nerve
lateral 2 innervated by the median nerve
what is the action of the lumbricals?
flexion at the metacarpophalangeal joint and simultaneously extension of the interphalangeal joints of 2nd to 5th digits
what is the action of the interossei?
dorsal abduct the phalanges
palmar adduct the phalanges
what nerve innervates the interossei?
ulnar nerve
which artery is the main contributor to the superficial and deep palmar arches?
ulnar artery for superficial
radial artery for deep
what are the bones of the wrist joint?
triquetrum hamate capitate lunate scaphoid trapezius
what actions occur at the wrist joint?
flexion
extension
circumduction
radial and ulnar deviation (abduction, adduction)
what is the combined action of the flexor and extensor carpi ulnaris muscle on the wrist joint?
adduct / ulnar deviation
what muscles are responsible for radial deviation of the wrist?
flexor carpi radialis
extensor carpi radialis longus
extensor carpi radialis brevis
