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Muscles moving the upper extremities


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Anatomy presentation
By: Alisia Childs

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Muscles moving the upper extremities

  1. 1. Muscles moving the Upper Extremities<br />
  2. 2. Muscles that move the Humerus<br />Pectoralis major<br />Action: <br />Flexes, adducts and rotates arm medially at shoulder <br />Origin: <br />Clavicle, sternum, costal cartilage of upper ribs<br />Insertion: <br />Humerus-greater tubercle<br />
  3. 3. Latissimus dorsi <br />Action: <br /> Extends, adducts and rotates humerus medially, retracts the shoulder (swimmers muscle)<br />Origin: <br />Spine of sacral lumbar and lower thoracic vertebra. Iliac crest, and bottom 4 ribs.<br />Insertion:<br /> Intertubercular groove of the humerus.<br />
  4. 4. Deltoid<br />Action: <br />Flexes and medially rotates arm, abducts arm, extends and laterally rotates arm.<br />Origin: <br />acromian process, spine of scapula, clavicle<br />Insertion: <br />Deltoid tuberocity of the humerous<br />
  5. 5. Supraspinatus<br />Action: <br />Abducts arm<br />Origin : <br />Supraspinous fossa of scapula<br />Insertion: <br />Greater tubercle of humerus<br />
  6. 6. Infraspinatus<br />Action: <br />Adducts and laterally rotates arm<br />Origin: <br />Infraspinous fossa of scapula<br />Insertion: <br />Greater tubercle of humerus<br />
  7. 7. Teres minor<br />Action: <br />Adducts and laterally rotates arm<br />Origin: <br />upper lateral border of scapula<br />Insertion: <br />Greater tubercle of humerus<br />
  8. 8. Teres major<br />Action: <br />Medially rotates and adducts arm<br />Origin: <br />Inferior angle and lateral border of scapula<br />Insertion: <br />Crest of lesser tubercle of the humerus<br />
  9. 9. Muscles that act on the forearm<br />Triceps brachii<br />Action: <br />Extend forearm<br />Origin: <br />Long head-infraglenoid tubercle of the scapula<br />Lateral Head-posterior surface above radial groove.<br />Middle Head-posterior humerous below radial groove.<br />Insertion: <br />Olecranon process of the Ulna<br />
  10. 10. Pass, Fail, Pass, FailPronator TeresFlexor carpi radialisPalmaris longusFlexor carpi ulnaris <br />
  11. 11. Pronator Teres<br />
  12. 12. Flexor carpi radialis <br />Flexor carpi ulnaris<br />
  13. 13. Palmaris longus<br />
  14. 14. THE 3 B’S THAT BEND THE ELBOW:<br />Biceps brachii, Brachioradialis, Brachialis<br />
  15. 15. Biceps brachii <br />Action:<br /> Flex and supinate the forearm<br />Origin: <br />Short head- goes to the corocoid process of scapula <br />Long head-supraglenoid tubercle of scapula.<br />Insertion: <br />radiotuberocity and fascia of forearm<br />
  16. 16. Brachioradialis<br />Action: <br />Flexes forearm<br />Origin: <br />lateral supercondylar ridge of humerus.<br />Insertion: <br />Styloid process of radius<br />
  17. 17. Brachialis<br />Action: <br />Flexes forearm<br />Origin: <br />The distal anterior surface of the humerus.<br />Insertion: <br />The coronoid process of the ulna<br />
  18. 18. Pronators and Supinator<br />Pronators<br /><ul><li>Pronator Quadratus</li></ul>Action: Pronates the hand<br />Origin: the distal 4th of the ulna<br />Insertion: distal 4th of the radius<br /><ul><li>Pronator Teres </li></ul>Action: Pronates forearm<br />Origin: the medial epicondyle of the humerus and coronoid process of the ulna<br />Insertion: Lateral surface of the radius.<br />
  19. 19. Pronators<br />Pronator quadratus<br />Pronator teres <br />
  20. 20. Supinator<br /><ul><li>Action:
  21. 21. Supinates forearm
  22. 22. Origin:
  23. 23. the laterally epicondyle of the humerous and crest of the ulna.
  24. 24. Insertion:
  25. 25. Lateral surface of the proximal 3rd of the radius</li></li></ul><li>MUSCLES THAT MOVE WRIST, HAND AND DIGITS<br />
  26. 26. Palmar Interosseous muscles<br />Action: <br />Adduct digits 2,4 and 5<br />Origin: <br />palmar surface of metacarpals 2,4,5<br />Insertion: <br />sides of proximal phalange bases for fingers 2,4,5<br />
  27. 27. Dorsal Interosseous Muscles<br />Action: <br />Abduct digits 2-4<br />Origin: <br />adjacent sides of metacarpal bones.<br />Insertion: <br />dorsal tendons on fingers 2-5<br />
  28. 28. Thenar Group<br />Flexor pollicis brevis<br />Opponens pollicis <br />Abductor pollicis brevis<br />Actions: <br />Flexes thumb<br />Abducts thumb<br />Opposition of thumb<br />Don’t need to know origins/insertions<br />
  29. 29. Hypothenar Group<br />Flexor digiti minimi brevis<br /> Abductor digiti minimi<br />Opponens digiti minimi<br />Actions:<br />Flexes finger 5<br />Abducts pinky<br />Opposition of pinky<br />Don’t need to know origins/insertions<br />