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  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