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1.04 Remember the structures of the muscular system

1.04 Remember the structures of the muscular system. Essential Question. What are the structures of the muscular system?. Introduction. https://www.youtube.com/watch?v=HIZSi5oghaU https://www.youtube.com/watch?v=98u7ZkOocbI. Warm up.

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1.04 Remember the structures of the muscular system

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  1. 1.04 Remember the structures of the muscular system

  2. Essential Question • What are the structures of the muscular system? 1.04 Remember the structures of the muscular system

  3. Introduction • https://www.youtube.com/watch?v=HIZSi5oghaU • https://www.youtube.com/watch?v=98u7ZkOocbI

  4. Warm up • Using dry erase boards, brainstorm as a table the names you think your muscles should be called. Each group will share their results. • Name and demonstrate the muscles you are familiar with.

  5. The Muscular System • Comprises nearly half our weight. • Over 650 muscles. • They produce most of our body heat. • Each muscle is made up of hundreds or thousands of muscle fibers. • What are these called? 1.04 Remember the structures of the muscular system

  6. The Muscular System:Muscle Fibers • Bundles of threadlike structures called myofibrils • Composed of: • Myosin • Actin • Form overlapping pattern called sarcomere muscle muscle fiber sarcolemma sarcomere functional unit of muscle movement 1.04 Remember the structures of the muscular system

  7. Structures of the muscular system Connective tissue • Tendons • Fascia Muscles • Skeletal • Smooth • Cardiac • Sphincter 1.04 Remember the structures of the muscular system

  8. Structures of the muscular system Types of muscle • Skeletal • Smooth • Cardiac • Sphincter 1.04 Remember the structures of the muscular system

  9. Structures of the muscular system Types of Muscle Skeletal muscles • Attached to bone • Striated (striped) appearance • Voluntary • Multinucleated muscle cell bundles • Contract quickly, fatigue easily, can’t maintain contraction for long period of time 1.04 Remember the structures of the muscular system

  10. Structures of the muscular system Types of Muscle Smooth muscles • Also known as visceral muscles • Involuntary • Located in walls of digestive system, uterus & blood vessels • INVOLUNTARY • Controlled by autonomic nervous system • Act slowly, do not tire easily, can remain contracted for long time 1.04 Remember the structures of the muscular system

  11. Structures of the muscular system Types of Muscle Cardiac muscle • Found only in the heart • Striated, branched • Involuntary • Cells are fused- when one contracts, they all contract, creating the heartbeat 1.04 Remember the structures of the muscular system

  12. Structures of the muscular system Types of Muscle Sphincter muscles • Also called dilator muscles • Special, circular muscles • Located in the • Digestive system-of esophagus stomach and small intestine, anus, and mouth. • Urinary System- urethera 1.04 Remember the structures of the muscular system

  13. Structures of the muscular system Types of Muscle Review • Skeletal • Smooth • Cardiac • Sphincter 1.04 Remember the structures of the muscular system

  14. Structures of the muscular system Types of Connective tissue • Tendons • Fascia 1.04 Remember the structures of the muscular system

  15. Structures of the muscular system Connective tissue • Tendons dense bands that connect skeletal muscle to the bone 1.04 Remember the structures of the muscular system

  16. Structures of the muscular system Connective tissue • Fascia Fibrous connective tissue sheets that wrap around muscle bundles 1.04 Remember the structures of the muscular system

  17. How do skeletal muscles get their names? • Location • Size • Direction • Number of origins • Location of origin and insertion • Action flexor • Extensor • Depressor • However, • not all muscles are named by the above methods! 1.04 Remember the structures of the muscular system

  18. Head & Neck Muscles 1.04 Remember the structures of the muscular system

  19. Torso/Trunk(anterior) 1.04 Remember the structures of the muscular system

  20. Torso/Trunk(anterior) 1.04 Remember the structures of the muscular system

  21. Torso/Trunk(posterior) 1.04 Remember the structures of the muscular system

  22. Upper extremities 1.04 Remember the structures of the muscular system

  23. Lower extremities 1.04 Remember the structures of the muscular system

  24. The muscular system reviewAnterior view 1.04 Remember the structures of the muscular system

  25. The muscular system reviewPosterior view 1.04 Remember the structures of the muscular system

  26. 1.04 Remember the structures of the muscular systemEssential Question • What are the structures of the muscular system? 1.04 Remember the structures of the muscular system

  27. Processing • Muscle Labeling Activities 1,2 &3 - See Figures 7-6 and 7-7 pg 201-204 in text. • Muscle Matching I • Videos: https://www.youtube.com/watch?v=s-uXNgpcakU • https://www.youtube.com/watch?v=-3G3JwZAZLk

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