Across
- 3. A neurotransmitter necessary for muscle contraction.
- 5. Contractile fibers within a muscle cell; actin and myosin.
- 7. Fibers that allow for endurance activities.
- 9. A muscle that acts in opposition to a prime mover.
- 10. Increase in number of motor units activated as stimulation intensity increases.
- 12. Condition of the muscle that occurs when myosin and actin levels drop
- 13. A neuron that transmits impulses from the central nervous system to an effector.
- 14. The outer sheath of connective tissue which surrounds a skeletal muscle.
Down
- 1. Condition where the body becomes rigid after death due to increased calcium permeability .
- 2. Connection point between motor neurons.
- 4. Dense connective tissue that separates individual skeletal muscles from other muscles.
- 6. Fibers built for rapid movements.
- 8. Bundles of muscle fibers
- 11. Structural and functional unit of a myofibril.