Across
- 2. A waste formed from the breakdown of proteins
- 4. Non living things that are responsible for many diseases, including cold sores, colds, and influenza
- 10. The voice box
- 11. The small gland that releases a chemical messenger called adrenaline into your blood
- 12. The system that defends you by destroying invaders
- 13. Cells that are designed to do a specific job
- 19. A solid waste that gets expelled from the body at periodic intervals
- 21. A group of cells that produce and secrete chemicals
- 22. A measurement of the number of breaths you take in a minute
- 24. Groups of different tissues form ______
- 26. Groups of different organs work together in _______
- 27. The system that sends electrical messages throughout the body
- 28. A chemical message released into the bloodstream
- 29. What living things are often referred to as
- 31. All living things respond to the ___________
- 32. Tiny organs found in cells
- 33. An organism made up of a single cell
- 35. A disease transmitted from animals to humans and often back again
- 36. A chemical that acts on the nervous system to reduce sensitivity to pain
- 40. A chemical and physical process in which foods are changed into a form they can be taken into cells
- 41. A measurement of the number of times your heart beats in a minute
- 42. What water, salts, and small amounts of urea are excreted through
- 43. Protects the inner contents of a cell and is made of fat cells called lipids
- 44. The part of the cell where excess water and food is stored
Down
- 1. What things such as pollen and bacteria stick to in the nasal cavity
- 3. The small sacks that bronchioles end in
- 5. Organisms made up of many cells
- 6. The part of the cell that produces energy in the form of 'ATP'
- 7. Only found in plant cells and is where photosynthesis takes place in a cell
- 8. The blood vessel that connects veins and arteries
- 9. The small tubes that the bronchi repeatedly divide into
- 14. The removal of wastes from the body
- 15. The blood vessel that transports blood away from the heart
- 16. The organ that helps regulate sugar levels
- 17. The main function of the respiratory system
- 18. All living things are composed of other ____
- 20. The system that produces chemical messengers called hormones
- 23. The system that is responsible for breathing
- 25. Bean shaped organs that come in pairs
- 30. The blood vessel that transports blood to the heart
- 34. Large molecules that lock onto invading organisms
- 37. Two tubes, each one leads into a lung
- 38. Groups of similar cells form _______
- 39. The part of the cell that contains the DNA of a cell
- 41. The contraction or squeezing of your ventricles
- 45. Wall Only found in plant cells and is the outer barrier of the cell