Create an account
a large triangular muscle covering the shoulder joint and serving to abduct and flex and extend and rotate the arm
Origin- Scapula near glenoid fossa. Insertion - Radial tuberosity of radius. Action-Flexes forearm.
Origin - Scapula and shaft of humerus. Insertion - Olecranon process of ulna. Action - Extends forearm.
Origin: long head- supraglenoid tubercle and glenohumeral labrum & short head- tip of the coracoid process of the scapula Insertion: radial tuberosity &bicipital aponeurosis Action: flexes the forearm at the elbow (when supinated) & supinates forearm from neutral & stabilizes anterior aspect of shoulder & flexes shoulder (weak if at all) Blood: muscular branches of brachial artery Nerve: musculocutaneous nerve, C5,6
Origin - Medial epicondyle of humerus. Insertion - Proximal phalanges of digits 2 to 5. Action - Flexes proximal phalanges.
Flexor carpi radialis
Origin - Medial epicondyle of humerus. Insertion - Base of metacarpals 2 and 3. Action - Flexor of digits 2 and 3.
Flexor digitorum superficialis
O: distal humerus, ulna, radius I: 2-5th digits A: flexes hand and fingers
Extends wrist, metacarpophalangeal, and interphalangeal joints; tends to spread digits apart when extending metacarpophalangeal joints. O: Lateral epicondyle of humerus. I: Dorsal surfaces of phalanges II - V.
Extensor digiti minimi
O: ulnar side of extended digitorum belly I: joins tendon if extended digit to pinky PRIMARY ACTION: pinky extension
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together