Across
- 5. \ a group of different tissues working together to perform a particular
- 6. \ two narrow tubes that carry air into the lungs from the trachea.
- 10. \ a waves of muscle contractions that move food through the digestive
- 12. \ a vessel that carries blood toward the heart.
- 13. \ nervous system system made up of the brain and the spinal cord.
- 14. and liquids from the mouth or nose.
- 17. \ a tube that is held open by C-shaped rings of cartilage; connects the
- 19. \ the tissue that connects bones to other bones.
- 22. differentiation \ the process by which cells become different types of cells.
- 23. \ where two or more bones meet.
- 25. molecules that your body can absorb and use.
- 29. system \ the part of your nervous system that detects or senses the
- 31. \ tissue specialized plant tissue composed of tubelike cells that transports
- 34. and nutrients in some plants.
- 40. made of sensory and motor neurons that transmit
- 42. digestion \ a process in which food is physically broken into smaller pieces.
- 43. \ between the central nervous system (CNS) and the rest
- 45. \ a series of chemical reactions that convert light energy, water, and
- 47. \ exchange occurs.
- 48. \ a part of food used by the body to grow and survive.
- 51. \ special structures in all parts of the sensory system that detect
- 52. circulatory system \ a system that transports blood and other fluids into open spaces
- 53. system \ a group of organs that work together and perform a specific task.
- 55. \ cord a tubelike structure of neurons that sends signals to and from the
- 56. \ a muscular tube that connects the mouth to the stomach.
- 57. \ a thick, hard outer covering; protects and supports an animal’s body.
- 58. \ a tubelike passageway at the top of the throat that receives air,
Down
- 1. \ a type of vascular tissue that carries dissolved sugars throughout a
- 2. \ the mechanical and chemical breakdown of food into small particles
- 3. \ the main organs of the respiratory system.
- 4. into and out of your lungs.
- 7. \ the amount of energy it takes to raise the temperature of 1 kg of
- 8. surround organs in the body.
- 9. muscle \ muscle found only in the heart.
- 11. \ microscopic sacs or pouches at the end of the bronchioles where
- 13. \ a tiny blood vessel that delivers supplies to an individual cell and
- 15. system \ the system that collects and eliminates wastes from the body and
- 16. the lower two chambers of the heart.
- 18. skeleton \ a fluid-filled internal cavity surrounded by muscle tissue.
- 20. \ a vessel that carries blood away from the heart.
- 21. \ a large muscle below the lungs that contracts and relaxes as air
- 24. system \ the part of an organism that gathers, processes, and responds to
- 26. \ strong body tissue that can contract in an orderly way.
- 27. circulatory \
- 28. by 1°C.
- 30. tasks.
- 32. digestion \ a process in which chemical reactions break down pieces of food
- 33. \the upper two chambers of the heart.
- 35. small molecules.
- 36. finger \ like projections, many of which cover the folds of the small
- 37. the body.
- 38. dioxide \ into the food-energy molecule glucose and give off
- 39. and the bronchi.
- 41. away waste materials.
- 44. muscle \ involuntary muscle named for its smooth appearance.
- 45. nervous \
- 46. \ a group of similar types of cells that work together to carry out
- 49. \ a type of vascular tissue that carries water and dissolved nutrients
- 50. the roots to the stem and the leaves.
- 51. the level of fluid in the body.
- 54. \ the basic functioning unit of the nervous system; a nerve cell.
- 55. \ a small opening in the epidermis, or surface layer, of a leaf.