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22 Cards in this Set
- Front
- Back
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Erector spinae |
Action - extends vertebrae and ribs; maintains erect posture Origin - sacrum, ilium, lumbar/thoracic vertebrae Insertion - ribs, cervical and thoracic vertebrae |
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Pectoralis major |
Action - flexes, adducts, rotates arm medially, pulls arm across chest Origin - Clavicle, sternum, costal cartilage of 1 to 6th rib Insertion - intertubercular groove of humerus |
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Serratus anterior |
Action - pulls scapula anteriorly and upward Origin - upper ribs Insertion- scapula |
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Deltoid |
Action - abducts arm, extends and lateral rotation or flexes and medially rotates arm Origin - clavicle, acromion process and spine of scapula Insertion - deltoid tuberosity of humerus |
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External intercostals |
Action - elevates and draws ribs together for inspiration Origin - inferior border of a rib, external surface Insertion - superior border of a rib below, external surface |
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Internal intercostals |
Action - draws ribs together, depresses thorax for expiration Origin - superior border of a rib, internal surface Insertion - inferior border of a rib above, internal surface |
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Diaphragm |
Action - pulls central tendon down, increasing size of thoracic cavity, inspiration Origin - xiphoid process, costal cartilages of last 6 ribs, lumbar vertebrae Insertion - central tendon |
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Rectus abdominis |
Action - flexes and rotates vertebral column Origin - public crest and symphysis pubis Insertion - costal cartilage of 5th to 7th ribs and xiphoid process |
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External oblique |
Action- compresses abdomen, lateral rotation Origin- lower 8 ribs Insertion- iliac crest, Linea alba (aponeurosis of midline) |
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Internal oblique |
Action - compresses abdomen, lateral rotation Origin- iliac crest Insertion- Linea Alba, costal cartilage of last 3 or 4 ribs |
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Transversus abdominis |
Action - compresses abdomen Origin - inguinal ligament, lumbar fascia, costal cartilage of last 6 ribs Insertion - Linea alba and pubic crest |
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Trapezius |
Action- rotates or raises scapula, pulls scapula medially or pulls scapula and shoulder downward, extend head or laterally flexes head and neck Origin - occipital bone, cervical and thoracic vertebrae Insertion - clavicle, acromion, spinous process of scapula |
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Latissimus dorsi |
Action - extends, adducts and rotates humerus medially, retracts shoulder Origin - sacral, lumbar and lower thoracic vertebrae, iliac crest and lower ribs Insertion - intertubercular groove of humerus |
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Triceps brachii |
Action - extends the forearm Origin - scapula and humerus Insertion - olecranon process of ulna |
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Biceps brachii |
Action - flexes elbow, supinator Origin - coracoid process and supraglenoid tubercle of scapula Insertion - Radial tuberosity of radius |
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Brachioradialis |
Action - flexes elbow Origin - lateral, distal humerus Insertion - styloid process of radius |
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Brachialis |
Action - flexes elbow Origin - anterior distal humerus Insertion - coronoid process and tuberosity of ulna |
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Flexor carpi radialis |
Action - flexes wrist and abducts hand Origin - humerus Insertion - 2nd and 3rd metacarpals |
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Flexor carpi ulnaris |
Action - flexes and adducts the wrist Origin - humerus and ulna Insertion - carpal and metacarpal bones |
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Extensor carpi radialis longus |
Action - extends and abducts the wrist Origin - humerus Insertion - 2nd metacarpal |
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Extensor digitorum |
Action - extends wrist, hand, and digits Origin - lateral epicondyle of humerus Insertion - middle phalanges of digits |
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Extensor carpi ulnaris |
Action - extends and adducts wrist Origin - humerus and ulna Insertion - 5th metacarpal |
