1. Circulatory System

2. Blood Facts Blood Notes
Liquid tissue that transports gases and nutrients around body
Comes in four types A, B, AB, and O
Mostly liquid with solids and gases
Average adult has about 5 liters of blood
Blood that is high in oxygen is BRIGHT red
Blood that is low in oxygen is DARK red; NOT blue
Blood Facts

3. Blood Parts Blood Notes
1. Plasma is the liquid part of blood; water, glucose, nutrients, hormones, and gases
2. Red Blood Cells carry oxygen throughout body; made constantly by the bones; last about 120 days
3. White Blood Cells fights bacteria, fungi, and viruses; last up to a few weeks; more are made when person is sick
4. Platelets odd-shaped, sticky substance that help blood clot
Not all blood is the same. Transfusions from one person to another could be deadly if their blood types are not matched.
Blood Parts