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Arm muscles ppt

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Arm muscles ppt

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  2. 2. Muscles that Move the Forearm and Hand Figure 11–16a
  3. 3. Muscles that Move the Forearm and Hand Figure 11–16b
  4. 4. Muscles that Move the Forearm and Hand <ul><li>Originate on humerus and insert on forearm </li></ul><ul><li>Exceptions: </li></ul><ul><ul><li>the major flexor ( biceps brachii ) </li></ul></ul><ul><ul><li>the major extensor ( triceps brachii ) </li></ul></ul>3D Rotation: Muscles of the Forearm and Hand PLAY
  5. 5. Extensors and Flexors <ul><li>Extensors: </li></ul><ul><ul><li>mainly on posterior and lateral surfaces of arm </li></ul></ul><ul><li>Flexors: </li></ul><ul><ul><li>mainly on anterior and medial surfaces </li></ul></ul>
  6. 6. 13 Muscles that Move the Forearm and Hand (1 of 8) <ul><li>Biceps brachii : </li></ul><ul><ul><li>flexes elbow </li></ul></ul><ul><ul><li>stabilizes shoulder joint </li></ul></ul><ul><ul><li>originates on scapula </li></ul></ul><ul><ul><li>inserts on radial tuberosity </li></ul></ul>
  7. 7. 13 Muscles that Move the Forearm and Hand (2 of 8) <ul><li>Triceps brachii : </li></ul><ul><ul><li>extends elbow </li></ul></ul><ul><ul><li>originates on scapula </li></ul></ul><ul><ul><li>inserts on olecranon </li></ul></ul><ul><li>Brachialis and brachioradialis : </li></ul><ul><ul><li>flex elbow </li></ul></ul>
  8. 8. 13 Muscles that Move the Forearm and Hand (3 of 8) <ul><li>Anconeus : </li></ul><ul><ul><li>opposes brachialis </li></ul></ul><ul><li>Palmaris longus : </li></ul><ul><ul><li>superficial </li></ul></ul><ul><ul><li>flexes wrist </li></ul></ul>
  9. 9. 13 Muscles that Move the Forearm and Hand (4 of 8) <ul><li>Flexor carpi ulnaris : </li></ul><ul><ul><li>superficial </li></ul></ul><ul><ul><li>flexes wrist </li></ul></ul><ul><ul><li>ad ducts wrist </li></ul></ul>
  10. 10. 13 Muscles that Move the Forearm and Hand (5 of 8) <ul><li>Flexor carpi radialis : </li></ul><ul><ul><li>superficial </li></ul></ul><ul><ul><li>flexes wrist </li></ul></ul><ul><ul><li>ab ducts wrist </li></ul></ul>
  11. 11. 13 Muscles that Move the Forearm and Hand (6 of 8) <ul><li>Extensor carpi radialis : </li></ul><ul><ul><li>superficial </li></ul></ul><ul><ul><li>extends wrist </li></ul></ul><ul><ul><li>ab ducts wrist </li></ul></ul>
  12. 12. 13 Muscles that Move the Forearm and Hand (7 of 8) <ul><li>Extensor carpi ulnaris : </li></ul><ul><ul><li>superficial </li></ul></ul><ul><ul><li>extends wrist </li></ul></ul><ul><ul><li>ad ducts wrist </li></ul></ul>
  13. 13. 13 Muscles that Move the Forearm and Hand (8 of 8) <ul><li>Pronator teres and supinator : </li></ul><ul><ul><li>originate on humerus and ulna </li></ul></ul><ul><ul><li>rotate radius </li></ul></ul><ul><li>Pronator quadratus : </li></ul><ul><ul><li>originates on ulna </li></ul></ul><ul><ul><li>assists pronator teres </li></ul></ul>
  14. 14. Muscles that Move the Hand and Fingers Figure 11–17a, b
  15. 15. Muscles that Move the Hand and Fingers Figure 11–17c, d
  16. 16. The Intrinsic Muscles of the Hand Figure 11–18a
  17. 17. The Intrinsic Muscles of the Hand Figure 11–18b

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