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For more slides click here. Muscles that Move the Forearm and Hand. Figure 11–16a. Muscles that Move the Forearm and Hand. Figure 11–16b. Muscles that Move the Forearm and Hand . Originate on humerus and insert on forearm Exceptions: the major flexor ( biceps brachii )

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  1. For more slides click here

  2. Muscles that Move the Forearm and Hand Figure 11–16a

  3. Muscles that Move the Forearm and Hand Figure 11–16b

  4. Muscles that Move the Forearm and Hand • Originate on humerus and insert on forearm • Exceptions: • the major flexor (biceps brachii) • the major extensor (triceps brachii) 3D Rotation: Muscles of the Forearm and Hand PLAY

  5. Extensors and Flexors • Extensors: • mainly on posterior and lateral surfaces of arm • Flexors: • mainly on anterior and medial surfaces

  6. 13 Muscles that Move the Forearm and Hand (1 of 8) • Biceps brachii: • flexes elbow • stabilizes shoulder joint • originates on scapula • inserts on radial tuberosity

  7. 13 Muscles that Move the Forearm and Hand (2 of 8) • Triceps brachii: • extends elbow • originates on scapula • inserts on olecranon • Brachialis and brachioradialis: • flex elbow

  8. 13 Muscles that Move the Forearm and Hand (3 of 8) • Anconeus: • opposes brachialis • Palmaris longus: • superficial • flexes wrist

  9. 13 Muscles that Move the Forearm and Hand (4 of 8) • Flexor carpi ulnaris: • superficial • flexes wrist • adducts wrist

  10. 13 Muscles that Move the Forearm and Hand (5 of 8) • Flexor carpi radialis: • superficial • flexes wrist • abducts wrist

  11. 13 Muscles that Move the Forearm and Hand (6 of 8) • Extensor carpi radialis: • superficial • extends wrist • abducts wrist

  12. 13 Muscles that Move the Forearm and Hand (7 of 8) • Extensor carpi ulnaris: • superficial • extends wrist • adducts wrist

  13. 13 Muscles that Move the Forearm and Hand (8 of 8) • Pronator teres and supinator: • originate on humerus and ulna • rotate radius • Pronator quadratus: • originates on ulna • assists pronator teres

  14. Muscles that Move the Hand and Fingers Figure 11–17a, b

  15. Muscles that Move the Hand and Fingers Figure 11–17c, d

  16. The Intrinsic Muscles of the Hand Figure 11–18a

  17. The Intrinsic Muscles of the Hand Figure 11–18b

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