Body(;

5. To shorten or tighten a muscle, causing movement.
6. a place where two or more bones meet, which allows for movement.
7. Part of a neuron that gathers information and carries it toward the cell body.
9. The bones of the chest that protect the heart and lungs.
13. An electrical signal that travels along a neuron to transmit information.
14. A specialized nerve cell that carries electrical messages, or impulses, throughout the body.
15. muscle A muscle that you can control and move by choice, like the muscles in your arms and legs.

1. muscle Involuntary muscles that control movement in the internal organs, like the stomach and blood vessels.
2. A tissue composed of fibers that contract and relax to create movement.
3. A tough cord of tissue that attaches muscle to bone.
4. The rigid tissue that makes up the skeleton of the human body.
8. An automatic and quick reaction to a stimulus that is not controlled by choice.
10. cord The bundle of nerves that extends from the brain down the back and is protected by the vertebrae.
11. The bony framework of the head that protects the brain.
12. muscle A muscle that moves automatically without you thinking about it, such as your heart.