The document summarizes how blood works in the human body. It carries oxygen from the lungs to organs and tissues, and carries carbon dioxide back to the lungs. The three main components of blood are red blood cells, which carry oxygen; white blood cells, which help fight infection; and platelets, which help the blood clot. HIV is a virus that can be transmitted through blood or other bodily fluids and develops into AIDS if left untreated.

1. The Blood Brendan Maguire Grade 7

2. Introduction The blood runs threw the entire body to drop of oxygen to all the body parts so they can move. It drops off Carbon dioxide and picks up oxygen at the heart.

3. Red and White Blood Cells There are three basic types of blood. White blood cells, red blood cells, and platelets. White blood cells help defend the body from diseases. They go around the virus and digest it. Red blood cells drop off carbon dioxide and picks up oxygen.

4. Red and White Blood Cells (continued) They travel all over the body to drop off oxygen so the body can function.

5. Platelets Platelets come from bone marrow. They clot the blood so that the blood won’t pour out of your body.

6. How the Blood Works The heart pumps the blood threw out the body. Blood drops off carbon dioxide and picks up oxygen from the heart. The blood helps the body by dropping oxygen to all of the body parts so it can function.

7. HIV and AIDS HIV stands for Human Immuno Virus. AIDS stands for Acquired Immune Deficiency Syndrome. HIV is a blood virus acquired from sexual intercourse or by touching someone whose blood is infected with HIV. Drug addicts get HIV from sharing the same needles for drugs like heroin.

8. HIV and AIDS (continued) If HIV is not treated correctly it will turn into AIDS. AIDS can be prevented with the right medications. People in the 80’s did not know about thes procedures so most people would have died within 10 years with AIDS.