24: UE Myology: Antebrachium Flashcards
Pronator teres O and I (two heads)
Humeral head O: medial humeral epicondyle
Ulnar head O: coronoid process of ulna
I: lateral radius
Pronator teres A
Pronate, flex forearm
Innervation for superficial layer of flexors
Medial N for all except flexor carpi ulnaris (ulnar N)
Flexor carpi radialis O and I
O: medial humeral epicondyle
I: base of 2nd metacarpal
Flexor carpi radialis A
Flex forearm, flex and abduct hand at wrist
Palmaris longus O and I
O: medial humeral epicondyle
I: palmar aponeurosis, flexor retinaculum
Palmaris longus A
Flex forearm, flex hand, tense palmar aponeurosis
Flexor carpi ulnaris O and I (two heads)
Humeral head O: medial humeral epicondyle
Ulnar head O: olecranon, posterior ulna
I: pisiform, hook of hamate, base of 5th metacarpal
Flexor carpi ulnaris A
Flex forearm, flex and adduct hand at wrist
Flexor digitorum superficialis O and I (two heads)
Humeroulnar head O: medial humeral epicondyle, coronoid of ulna
Radial head: superoanterior radius
I: bifed insertion on intermediate phalanges 2-5
Flexor digitorum superficialis A
Flex forearm, flex hand at wrist, flex phalanges 2-5 at MP and PIP joints
Flexor digitorum superficialis N
Median N
Flexor digitorum profundus O and I
O: proximal ulna, interosseous membrane
I: distal phalanges 2-5
Flexor digitorum profundus A
Flex hand at wrist, flex phalanges 2-5 at MP, PIP, and DIP joints
Innnervation for deep layer of flexors (with one exception)
All innervated by anterior interosseous N, but medial part of flexor digitorum profundus also innervated by Ulnar N
Flexor pollicis longus O and I
O: anterior radius, interosseous membrane
I: distal phalanx of pollux
Flexor pollicis longus A
Flex hand, flex and abduct 1st phalange
Pronator quadratus O and I
O: anterior distal ulna
I: anterior distal radius
Pronator quadratus A
Pronate forearm, hold radius and ulna together
Three nerves that innervate the superfiial layer of extensors
Radial N, deep radial N, posterior interosseous N