1. By cydney

2. When red blood cells have oxygen they are a dark red color. when red blood cells do not have oxygen they are a light red color.

3. White blood cells White blood cells help our body fight germs and other harmful things.

4. platelets These are platelets Platelet form blood clots.

5. Arteries, capillaries, and veins. Arteries are blood vessels that carry blood away from the body. Veins are blood vessels that take blood from the cells back to the heart.

6. Parts of the heart This is a picture of the heart Your heart began puming since the day you were born and pump till the day you die.