Muscle Review

6. combined lengthening of all sarcomeres in a muscle fibers (2 words, no spaces)
9. Protein present on actin filament that blocks cross-bridge binding sites, therefore preventing muscle contraction
10. Another name for a skeletal muscle (2 words, no spaces)
12. to extend; movement that increases the angle
13. muscle or muscle group that directly opposes action of prime mover
15. Cytoplasm of skeletal muscle fiber
17. tough, fibrous connective tissue bands
19. Myofibrils made up of _____
21. Basic contractile unit of muscle fiber
22. separates the thoracic cavity from abdominal cavity, flattens when contracted allowing air to enter lungs
23. Muscle or muscle group that directly produces a desired movement

1. Muscle cell membrane
2. Muscle fibers cluster into ______
3. To Bend; Movement that decreases angle
4. Muscle that contracts at same time as the prime mover, assists in carrying out action
5. To pull away from the body
7. both inspiration and expiration; increase and decrease thoracic cavity to draw air into and push air out of lungs
8. Chemical nuerotransmitter found in the synaptic vesicles
11. drawing air into the lungs
12. pushing air out of the lungs
14. Protein present on actin filament that acts as a receptor for calcium
16. prefix for muscle
18. Muscle that contracts to stabilize joints and/or the origin
19. muscle fiber is made up of ______
20. To pull towards the body
23. Produced by the mitochondria, energy is supplied by it (Abbreviation)