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Skeletal Muscle Review

Skeletal Muscle Review. Anatomy and Physiology I Unit 8 – The Muscular System. The Skeletal Muscles There are about 650 muscles in the human body. They enable us to move, maintain posture and generate heat. In this section we will only study a sample of the major muscles. .

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Skeletal Muscle Review

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  1. Skeletal Muscle Review Anatomy and Physiology I Unit 8 – The Muscular System

  2. The Skeletal MusclesThere are about 650 muscles in the human body. They enable us to move, maintain posture and generate heat. In this section we will only study a sample of the major muscles.

  3. Types of Musculo-Skeletal Movement Flexion

  4. Extension

  5. Hyperextension

  6. Abduction, Adduction & Circumduction

  7. Rotation

  8. Insertion Origin Muscle Attachments

  9. Sternocleidomastoideus Flexes and Rotates Head

  10. Masseter Elevate Mandible

  11. Temporalis Elevate & Retract Mandible

  12. Trapezius Extend Head, Adduct, Elevate or Depress Scapula

  13. Latissimus Dorsi Extend, Adduct & Rotate Arm Medially

  14. Deltoid Abduct, Flex & Extend Arm

  15. Pectoralis Major Flexes, adducts & rotates arm medially

  16. Biceps Brachii Flexes Elbow Joint

  17. Triceps Brachii Extend Elbow Joint

  18. Rectus Abdominus Flexes Abdomen

  19. External Oblique Compress Abdomen

  20. External Intercostals Elevate ribs

  21. Internal Intercostals Depress ribs

  22. Diaphragm Inspiration

  23. Forearm Muscles • Flexor carpi—Flexes wrist • Extensor carpi—Extends wrist • Flexor digitorum—Flexes fingers • Extensor digitorum—Extends fingers • Pronator—Pronates • Supinator—Supinates

  24. Gluteus Maximus Extends & Rotates Thigh Laterally

  25. Rectus Femoris Flexes Thigh, Extends Lower Leg

  26. Gracilis Adducts and Flexes Thigh

  27. Sartorius Flexes Thigh, & Rotates Thigh Laterally

  28. Biceps Femoris Extends Thigh & Flexes Lower Leg

  29. Gastrocnemius Plantar Flexes Foot & Flex Lower Leg

  30. Tibialis Anterior Dorsiflexes and Inverts Foot

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