Unit 8 Anatomy by Skyla Shea

5. reticulum - Beneath the sarcolemma of a muscle fiber lies a network of membranous channels
7. Myofibrils are made up of many units called …
10. the gap between the membranes of the neuron and muscle fiber
11. cordlike or bandlike mass of dense connective tissue that connects a muscle to a bone.
14. movement of a body part toward the midline.
17. neurons communicate with the muscle fiber by way of chemicals
22. are active in muscle contraction
23. movement decreasing the angle between bones at a joint.
24. movement increasing the angle between bones at a joint.
25. Skeletal muscle fibers contract only when stimulated by a

1. muscle that assists the action of an agonist.
2. sheet of connective tissue that attaches muscle to bone, skin, or to coverings of adjacent muscles.
3. protein in a muscle fiber that forms the thin filaments that slide between thick filaments of the protein myosin, contracting muscle fibers.
4. end of a muscle attached to a moveable part.
6. all movements requires these
8. movement of a body part away from the midline.
9. Sometimes muscles are connected to each other by broad sheets of connective tissue called…
12. sheet of dense connective tissue that separates individual muscles and helps hold them in position.
13. particular movement of a muscle, how it makes your body move.
15. a muscle that opposes a particular movement
16. muscle that provides most of a particular body movement. Also called an agonist.
18. the layer of connective tissue around each skeletal muscle
19. The end of a muscle that attaches to a relatively immovable part.
20. a single, long cylindrical muscle cell
21. the cytoplasm of a muscle cell