Health & Body №5

2. A condition in which the small sacs (= spaces) in the lungs become filled with too much air, causing breathing difficulties and heart problems.
4. An orange-yellow substance produced by the liver (= a large organ in the body that cleans the blood) when it breaks down haemoglobin (= a substance in red blood cells).
6. Able to cause disease.
8. A hollow, cylinder-shaped piece of equipment used for sucking liquid out of something or pushing liquid into something, especially one with a needle that can be put under the skin and used to inject drugs, remove small amounts of blood, etc.
10. A neurotransmitter (= a chemical in the body that carries messages from the brain) that helps you feel relaxed and happy.
11. The liquid which comes out on the surface of your skin when you are hot or frightened.
15. The decay of a part of a person's body because the blood has stopped flowing there.

1. The liquid produced in your mouth to keep the mouth wet and to help to prepare food to be digested.
3. A serious infectious disease that causes the tissues around the brain and spinal cord to swell.
5. The action of breathing air, smoke, or gas into your lungs.
7. Relating to the blood vessels, especially the arteries, that supply the brain.
9. An almost solid piece of something.
10. An illness caused by spending too much time in strong heat and light from the sun.
12. A lot of small red spots on the skin.
13. The tube that carries air from your throat to your lungs.
14. A person who has had an arm or leg cut off.