| Definition |
Origin: Acromion process and scapular spine,
clavicle
Insertion: Deltoid tuberosity of
humerus
Action: Abduct, extend, and flexes
arm | Deltoid |
Origin: Coracoid process & tubercle above
glenoid cavity of Scapula
Insertion: Radial tuberosity
Action: Flexes forearm & rotates
hand laterally (supinate) | Biceps brachii |
Origin: Anterior shaft of humerus
Insertion: Ulna (coronoid process)
Action: Flexes the forearm | Brachialis |
Origin: Tubercle below glenoid cavity, lateral
and medial surfaces of humerus
Insertion: Ulna (olecranon process)
Action: Extends the forearm | Triceps brachii |
Origin: Distal humerus
Insertion: Styloid process of radius
Action: Flexes the forearm | Brachioradialis |
Origin: Distal end of humerus
Insertion: Base of 2nd metacarpal
Action: Extends wrist/ abducts hand | Extensor carpi radialis longus |
Origin: Lateral epicondyle of humerus
Insertion: Base of 2nd & 3rd
metacarpals
Action: Extends wrist/ abducts hand | Extensor carpi radialis brevis |
Origin: Lateral epicondyle of humerus
Insertion: Posterior phalanges 2-5
Action: Extends the fingers | Extensor digitorum |
Origin: Lateral epicondyle of humerus
Insertion: Base of 5th metacarpal
Action: Extends and adducts hand
at the wrist | Extensor carpi ulnaris |
Origin: Medial epicondyle of humerus
Insertion: Fascia of palm
Action: Flexes the wrist | Palmaris longus |
Origin: Medial epicondyle of humerus and
olecranon process
Insertion: carpal & metacarpal bones
Action: Flexes & adducts hand at
the wrist | Flexor carpi ulnaris |
Origin: Medial epicondyle of humerus
Insertion: Tendons of fingers
Action: Flexes the fingers | Flexor digitorum superficialis |
Origin: Medial epicondyle of humerus
Insertion: Base of 2nd and 3rd
metacarpals
Action: Flexes wrist and abducts
hand | Flexor carpi radialis |
Origin: Medial epicondyle of humerus
Insertion: Lateral radius
Action: Rotates arm medially | Pronator teres |
Origin: Lateral epicondyle of humerus
Insertion: Lateral radius
Action: Rotates arm laterally | Supinator |