| Term | Definition |
|---|
| trapezius action | rotates scapula; raises scapula; pulls scapula medially, or pulls scapula and shoulder downward |
| trapezius origin | occipital bone, cervical and thoracic vertebra |
| trapezius insertion | clavicle, acromion and spinous process of scapula |
| serratus anterior action | pulls scapula anteriorly and downward |
| serratus anterior origin | upper ribs |
| serratus anterior insertion | scapula |
| erector spinae action | extends vertebrae and ribs; maintains erectness |
| erector spinae origin | sacrum, ilium, lumbar and thoracic vertebrae, ribs |
| erector spinae insertion | ribs, cervical and thoracic vertebrae |
| external intercostals action | elevates and draws ribs together-inspiration |
| external intercostals origin | inferior border of a rib, external surface |
| external intercostals insertion | superior border of a rib below, external surface |
| internal intercostals action | draws ribs together; depresses thorax (ribs)-expiration |
| internal intercostals origin | superior border of a rib, internal surface |
| internal intercostals insertion | inferior border of rib above, internal surface |
| diaphragm action | pulls central tendon down, increasing size of thoracic cavity, inspiration |
| diaphragm origin | xiphoid process, costal cartilages of last six ribs, and lumbar vertebrae |
| diaphragm insertion | central tendon |
| external oblique action | compresses abdomen; lateral rotation |
| external oblique origin | lower eight ribs |
| external oblique insertion | iliac crest; linea alba (aponeurosis of midline) |
| internal oblique action | compresses abdomen; lateral rotation |
| internal oblique origin | iliac crest |
| internal oblique insertion | linea alba (aponeurosis of midline); costal cartilage of last three or four ribs |
| transversus abdominis action | compresses abdomen |
| transversus abdominis origin | inguinal ligament, lumbar fascia, and costal cartilage of last six ribs |
| transversus abdominis insertion | linea alba, and pubic crest |
| rectus abdominis action | flexes vertebral column |
| rectus abdominis origin | pubic crest and symphysis pubis |
| rectus abdominis insertion | costal cartilage of fifth to seventh ribs and xiphoid process |
| pectoralis major action | flexes, adducts, and rotates arm medially, pulls arm across chest |
| pectoralis major origin | clavicle, sternum, costal cartilages of second to sixth rib |
| pectoralis major insertion | intertubercular groove of humerus |
| latissimus dorsi action | adducts and rotates humerus medially, retracts shoulder |
| latissimus dorsi origin | sacral, lumbar and lower thoracic vertebrae; iliac crest and lower ribs |
| latissimus dorsi insertion | intertubercular groove of humerus |
| deltoid action | abducts arm; extends or flexes humerus |
| deltoid origin | clavicle, acromion process and spine of scapula |
| deltoid insertion | deltoid tuberosity of humerus |
| biceps brachii action | flexes the forearm |
| biceps brachii origin | caracoid process of scapula |
| biceps brachii insertion | radial tuberosity of radius |
| brachialis action | flexes forearm |
| brachialis origin | distal humerus |
| brachialis insertion | coronoid process of ulna |
| brachioradialis action | flexes forearm |
| brachioradialis origin | distal humerus |
| brachioradialis insertion | styloid process of radius |
| triceps brachii action | extends the forearm |
| triceps brachii origin | scapula and humerus |
| triceps brachii insertion | olecranon process of ulna |
| flexor carpi radialis action | flexes wrist and abducts the hand |
| flexor carpi radialis origin | humerus |
| flexor carpi radialis insertion | second and third metacarpals |
| flexor carpi ulnaris action | flexes and adducts the wrist |
| flexor carpi ulnaris origin | humerus and ulna |
| flexor carpi ulnaris insertion | carpal and metacarpal bones |
| extensor digitorum superficialis action | extends wrist, hand and digits |
| extensor digitorum superficialis origin | ulna and radius |
| extensor digitorum superficialis insertion | middle phalanges of digits |
| extensor carpi radialis longus action | extends and abducts hand |
| extensor carpi radialis longus origin | humerus |
| extensor carpi radialis longus insertion | second metacarpal |
| extensor carpi ulnaris action | extends and adducts wrist |
| extensor carpi ulnaris origin | humerus and ulna |
| extensor carpi ulnaris insertion | fifth metacarpal |
Combine with other sets
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