1. Muscular System

2. What are four other functions of muscles besides helping you move?

3. Describe three characteristi cs of skeletal muscle.

4. Describe three characteristics of smooth muscle.

5. Describe three characteristics of cardiac muscle.

6. What are the thin elements of muscle fibers and what do they look like?

7. What are the thick elements of muscle fibers and what do they look like?

8. What is a neuromuscular junction and what happens there?

9. Define the following: Agonist, antagonist, synergist and fixator.

10. Agonist, antagonist, synergist, or fixator, when the arm flexes, what is the bisceps?

11. What is the origin of a muscle? Is it attached to moveable or immoveable bone? Is it the proximal or distal part of the muscle?

12. What is the origin of a muscle? Is it attached to moveable or immoveable bone?

13. What is the insertion of a muscle? Is it attached to moveable or immoveable bone? Is it the proximal or distal part of the muscle?

14. Which number is the origin? Which is the insertion? 1 2

15. Where are the following muscles & what are their actions? Pectoralis major Latissimus dorsi Sternocleidomastoid Trapezius Diaphragm Hamstrings Gastrocnemius

16. Which disease of the muscles affects the receptor sites of the muscle causing drooping? Myasthenia gravis, Muscular dystrophy, or fibromyalgia?

17. Which disease of the muscles causes the muscles to atrophy & replace them with fat tissue? Myasthenia gravis, Muscular dystrophy, or fibromyalgia?