Muscular Systam

1. connective fibers in muscle cells
3. sheet of connective tissue that attaches muscles
4. time between application of stimulus and the beginning of a response in a muscle fiber
6. end of a muscle attached to moving parts
7. one or two layers in the smooth muscle
11. sheet of fibourous connective tissue that encloses a muscle
12. increased force of contraction by a skeletal muscle fiber when a twitch occurs before the previous twitches relaxes.
14. protein that forms filament that slides between filaments of the protein myosin, contracting muscle fibers.
17. the amount of oxygen required after physical exercise to convert accumulated lactic acid to glucose
18. chemical that an axon end secretes on an affecter or another neuron
19. protein, that actin contracts muscle fibers
20. neuron that transmits impulses from the central nervous system to an effector.
22. pigmented protein in muscle that carries oxygen
23. simulation level that must be exceeded to elicit a nerve impulse or a muscle contraction
24. enzyme that catalyses breakdown of acetylchoinesterase

2. structural and functional unit of a myofibril
5. end of a muscles that attaches to a immovable part
8. brief contraction of a muscle fiber followed by relaxation
9. oxygen carrying pigment in red blood cells
10. membranous network of channels and tubules of a muscle fiber, corresponding to the endoplasmic reticulum of other cells
13. membranous channel that extends inwards from a muscle fiber
15. type of neurotransmitter, which is biochemical secreted an axonends of many neruon transmitter nerve messages across synapse.
16. muscle biochemical that stores energy
21. the definition of a muscle on the exterior of the skin