dissection of the upper limb Flashcards
biceps brachii
origin: scapula
insertion: radius
innervation: musculocutaneous n.
action: flexes the forearm
brachialis
origin: humerus
insertion: ulna
innervation: musculocutaneous n.
flexes the forearm
long head of triceps
origin: glenoid cavity
insertion: olecranon process of ulna
innervation: radial n.
extends the forearm and adducts the arm
lateral and medial head of triceps
origin: humerus
insertion: olecranon process of ulna
innervation: radial n.
action: extends the forearm
brachioradialis
origin: humerus
insertion: radius
innervation: radial n.
action: flexes the elbow
pronator teres
origin: ulna
insertion: radius
innervation: median n.
action: pronates the forearm
flexor carpi radialis
origin: humerus
insertion: metacarpals
innervation: median n.
action: flexes the wrist, abducts the hand
flexor carpi ulnaris
origin: ulna
insertion: medial carpal and 5th metacarpal
innervation: ulnar n.
action: flexes wrist, adducts hand
palmaris longus
origin: humerus
insertion: flexor retinaculum
innervation: median n.
action: flexes the wrist
flexor digitorum profundus
origin: ulna
insertion: distal phalanges of medial 4
innervation: median n.
action: flexes MCP, PIP, and DIP
extensor carpi radialis longus and brevis
origin: humerus
insertion: 2nd and 3rd metacarpals
innervation: radial n.
action: extends the wrist and abducts the hand
extensor carpi ulnaris
origin: lateral epicondyle
insertion: metacarpal of 5th digit
innervation: radial n.
action: extends the wrist, adducts the hand
extensor digitorum
origin: lateral epicondyle
insertion: middle and distal phalanges of medial 4 digits
innervation: radial n.
action: extends MCP, PIP, and DIP
extends wrist