Across
- 4. An electrical signal that travels along a neuron to transmit information.
- 9. muscle: Voluntary muscles attached to bones that allow for conscious movement, such as walking or running.
- 10. The bony framework of the head that protects the brain.
- 11. A place where two or more bones meet, which allows for movement.
- 12. muscle: Involuntary muscles that control movement in the internal organs, like the stomach and blood vessels.
- 13. The internal framework of bones and cartilage that supports the body.
- 15. A tough band of tissue that connects bones to other bones at a joint.
- 18. The bones of the chest that protect the heart and lungs.
- 22. muscle: A muscle that moves automatically without you thinking about it, such as your heart.
- 23. A tough cord of tissue that attaches muscle to bone.
- 24. The small bones that make up the spinal column and protect the spinal cord.
- 27. A tissue composed of fibers that contract and relax to create movement.
- 29. A muscle that increases the angle between two bones, like your tricep when you straighten your arm.
Down
- 1. A muscle that pulls in the opposite direction of another muscle to create balance.
- 2. To shorten or tighten a muscle, causing movement.
- 3. A muscle that decreases the angle between two bones, like your bicep when you bend your arm.
- 5. The soft, fatty tissue inside certain bones where new blood cells are produced.
- 6. The main organ of the nervous system that controls all body functions.
- 7. muscle: A muscle that you can control and move by choice, like the muscles in your arms and legs.
- 8. A flexible, elastic tissue that covers the ends of bones and acts as a shock absorber.
- 10. cord: The bundle of nerves that extends from the brain down the back and is protected by the vertebrae.
- 13. The tiny gap between two neurons where a message is passed.
- 14. A specialized nerve cell that carries electrical messages, or impulses, throughout the body.
- 16. The rigid tissue that makes up the skeleton of the human body.
- 17. muscle: The specialized involuntary muscle found only in the heart that pumps blood.
- 19. A bundle of neurons that transmits impulses.
- 20. Nervous System (PNS): Includes the nerves that branch out from the CNS to all parts of the body.
- 21. Part of a neuron that gathers information and carries it toward the cell body.
- 25. An automatic and quick reaction to a stimulus that is not controlled by choice.
- 26. Part of a neuron that sends information away from the cell body to other neurons.
- 28. Nervous System (CNS): Composed of the brain and spinal cord, it processes and transfers information.