Body systems

5. an involuntary striated muscle tissue found only in the heart
8. a body system which sends signals around the body.
9. to shorten or to undergo an increase in tension.
10. The degree of heat in the body of a living organism
13. most common of the three types of muscle in the body.
14. any process that living things use to actively maintain fairly stable conditions necessary for survival.

1. muscle that shows no cross stripes under microscopic magnification.
2. an involuntary motor response
3. special chemicals your body makes to help it do certain things
4. series of wave-like muscle contractions that move food through the digestive tract.
6. an organ system consisting of skeletal, smooth, and cardiac muscle.
7. a type of joint that functions much like the hinge on a door
11. anything that makes an organism or a part of an organism react in some way
12. The muscular tube through which food passes from the throat to the stomach.
15. A column of nerve tissue that runs from the base of the skull down the center of the back