Across
- 2. A special X-ray that creates a colour image due to a fluorescent dye added to the bloodstream
- 3. 1.5m-long tube that absorbs water from indigestible food
- 7. Infection-fighting cells with nuclei that make up less than 1% of blood’s volume
- 9. A tube of muscles that connects mouth to stomach
- 12. The “windpipe;” has rings of cartilage all around it to keep it open and allow air to flow freely
- 15. A type of connective tissue that circulates throughout the body
- 19. Fatty material covering axons that acts as insulation
- 21. Occurs when coronary arteries get blocked by plaque; can lead to a heart attack
- 23. Occurs when the pancreas produces too much or not enough insulin
- 25. Protein-rich liquid that makes up over half of blood’s volume
- 26. A type of cell in the digestive tract that produces mucus
- 31. Oxygen from lungs diffuses into capillaries, and carbon dioxide from blood diffuses into alveoli and is expelled by exhaling; the main function of the respiratory system
- 32. Nerve cell
- 35. Holds bones together at the joints
- 36. “Voluntary” muscle that can be consciously flexed
- 37. Most plentiful blood cells that make up almost half of blood’s volume and contain hemoglobin
- 38. Dense connective tissue made up of special cells in a matrix of collagen fibres; provides strong, flexible, low-friction support for bones and other tissues
- 39. Disease where the myelin sheaths of neurons are gradually destroyed, causing nerve impulses to be slowed and weakened, resulting in progressive loss of coordination, slurred speech, and difficulty walking
Down
- 1. A special type of muscle tissue found only in the heart that all contracts at the same time
- 4. Death of heart tissue that occurs when coronary arteries are completely blocked and the heart muscle cells no longer receive the oxygen they need to function
- 5. Hard and dense nonliving tissue that consists of a matrix of calcium, phosphorus, and collagen fibres
- 6. Stores extra bile and releases it when it’s needed
- 8. Long, thin cells with fine branches at the ends capable of conducting electrical impulses
- 10. Special type of muscle that contracts and relaxes without conscious thought – controlled by nerve tissue
- 11. The one cell that begins life
- 13. Tiny cells that help blood in clotting and make up less than 1% of blood’s volume
- 14. Thin sheets of tightly packed cells covering surfaces and lining internal organs
- 16. The world’s leading killer infectious disease; caused by bacteria entering the body through breathing
- 17. A large sheet of muscle underneath the lungs
- 18. An enzyme that regulates the concentration of glucose (a sugar) in the blood
- 20. A type of strong, but flexible connective tissue
- 22. The long thread-like part of the neuron
- 24. A fluid with enzymes that break down the fat in food
- 27. Various types of cells held together by a matrix (can be a liquid, solid, or gel)
- 28. An organ that produces insulin
- 29. Loss of bone tissue, making bones brittle and weak
- 30. Connects skeletal muscle to bones
- 33. Produces bile
- 34. 6m-long tube where most of the digestion occurs