Chapter 8

3. A motor neuron and all of the muscle fibers innervated by that single motor neuron
6. Structural protein of muscle that works with myosin in permitting muscular contraction
10. Protein covering the actin binding sites that prevent the myosin cross bridge from touching actin
13. Refers to an isotonic muscle action
14. The repeating contractile unit in a myofibril bounded by Z lines
15. A membranous structure that surrounds the myofibrils of muscle cells, location of terminal cisternae
16. Fibers that have a relatively small number of mitochondria, a limited capacity for aerobic metabolism, and are less resistant to fatigue than slow fibers
17. Contractile protein in the thick filament of a myofibril that contains the cross bridge that can bind actin and split ATP to cause tension development
18. The portion of the muscle containing the thick and thin contractile filaments, a series of sarcomeres where the repeating pattern of the contractile proteins gives the striated appearance to skeletal muscle

1. Protein associated with actin and tropomyosin that binds Ca++ and initiates the movement of tropomyosin on actin to allow myosin cross bridge to touch actin and initiate contraction
2. The cell membrane surrounding a muscle fiber
4. Fibers that contain large numbers of oxidative enzymes and are highly fatigue resistant
5. Synapse between axon terminal of a motor neuron and the motor end plate of a muscle's plasma membrane
7. The inner layer of connective tissue surrounding a muscle action/ term used to describe the muscle movement
8. The outer layer of connective tissue surrounding muscle
9. Highest tension developed by a muscle in response to a high frequency stimulation
10. Fibers that contain biomechanical and fatigue characteristics that are between type 2 b and type 1 fibers
11. Undifferentiated cell found adjacent to skeletal muscle fibers, can fuse with existing muscle fibers to contribute to muscle growth
12. The connective tissue surrounding the fasciculus of skeletal muscle fibers