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What is the origin insertion and action of the pectoralis major
- o-sternal end of clavicle, sternum
- i- greater tubercle of humerous
- a- prime mover of arm flexation, roatates arm medially adducts arm.
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pectoralis minor OIA
- O-anterior surfaces of ribs 3-5
- I-coracoid process of scapula
- A-draws scapula forward and downward
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serratus anterior action
rotates scapula inferior angle laterally and upward
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subscapularis OIA
- O- subscapular fossa of scapula
- I- lesser tubercle of humerous
- A-rotates humerous medially
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coracobrachialis OIA
- O- coracoid process of scapula
- I- medial surface of humerous shaft
- A- flexes and adducts humerous
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biceps brachii OIA
- O- short head= coracoid process of scapula,
- long head= supragledoid tubercle of scapula
- I-radial tuberosity
- A- flexes supinates forarm
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brachialis OIA
- O- front of distal humerous
- I- coronoid process of ulna and capsule of elbow joint
- A- flexes forarm
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pronator teres OIA
- O-medial epicondyle of humerus, coronoid process of ulna
- I-midshaft lateral radius
- A- pronates forearm
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Flexor carpi radialis OIA
- O-medial epicondyle of humerus
- I- base of the 2nd 3rd metacarpals
- A-flexes wrist and abducts hand
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palmaris longus OIA
- O- medial epicondyle of humerus
- I-palmar fascia of hand
- A- tenses skin and fascia of hand
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flexor carpi ulnaris OIA
- O- medial epicondyle of humerus
- I- base of 5th metacarpal
- A- flexor of wrist and adducts hand
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flexor digitorum superficialis OIA
- O-medial epicondyle of humerus
- I- middle phalanges of digit 2-5
- A-flexes wrist and middle phalanges of fingers 2-5
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flexor digitorum profundus OIA
- O-anterior medial surface of ulna
- I- distal phalanges of digits 2-5
- A-flexes digits
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flexor pollicis longus OIA
- O-anterior surface of radius and interosseous membrane
- I-distal phalanx of polex
- A-flexes the polex
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pronator quadratus OIA
- O- distal protion of anterior ulnar shaft
- I-distal surface of radius
- A- pronates forearm
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