Muscles

2. the basic repeating unit of muscle contraction
4. The point where a muscle attaches to a stationary bone
7. the ability of a muscle cell to respond to a stimulus and generate an electrical impulse, known as an action potential
10. The point where a motor neuron transmits a signal to a muscle fiber.
12. Increases the angle between two bones
13. The point where a muscle attaches to the bone it moves.
15. a sheath of fibrous elastic tissue surrounding a muscle
16. A muscle that assists the agonist, either by adding force or stabilizing a joint
20. the ability of a muscle to generate force and shorten in response to a stimulus

1. the process where a cell's internal electrical charge becomes less negative, moving it closer to a positive charge
3. The muscle that opposes the action of the agonist
5. Moves a limb toward the body's midline
6. the process where a cell's electrical charge returns to its resting state after being "fired" during an action potential
8. a muscle contraction that involves holding a position without any movement
9. a muscle contraction where the muscle changes length while maintaining a constant tension
11. a muscle's ability to be stretched or elongated beyond its normal resting length without tearing
14. The primary muscle responsible for a specific movement
17. Decreases the angle between two bones
18. Moves a limb away from the body's midline
19. he ability of a muscle to return to its original length after being stretched