Across
- 3. this muscle is found only in the walls of the heart
- 7. a bone that protects the brain
- 8. the largest artery in the body
- 10. a keratin protein that protects the tips of your fingers and toes
- 12. also known as the windpipe
- 16. how many chambers are in the heart
- 18. these muscles bend parts of your body
- 20. this system consists of the skin, hair, nails, and sweat glands
- 21. is stored in your bones for use in the body
- 22. found all over the body to control body temperature
- 25. a muscular pump that allows blood to move
- 26. a keratin protein found on the head, face, arms, and legs that provides insulation
- 27. the main passageways into the lungs
- 28. are found attached to the bones and allow for movement
- 30. the primary organ of the respiratory system
Down
- 1. small, thin blood vessels that are found throughout the body
- 2. connect skeletal muscles to bone
- 4. blood vessels that transport oxygen rich blood away from the heart
- 5. this organ has smooth muscle that helps contract to squeeze food
- 6. these are blood vessels that transport all over the body
- 8. tiny sacs in the lungs that allow movement of oxygen and carbon dioxide
- 9. is found inside the larger bones and produces red/white blood cells
- 11. this system provides bony protection to your internal organs
- 13. this system is responsible for transporting blood in the body
- 14. this type of muscle is found on the walls of your internal organs
- 15. the main external opening to breath
- 17. skeletal muscles are described this way because your brain chooses to control them
- 18. these form when there is a build up of melanin in the skin
- 19. the 2nd layer of skin where hair follicles are found
- 23. where skin is the thinnest on the body
- 24. muscle that expands and contracts to move air in and out of lungs
- 26. caused by spasms of the diaphragm
- 29. these muscles straighten parts of your body