Download Blood Notes

Blood Notes
**Blood transports materials (food, oxygen, and waste products) from one
part of the body to another. Most of these materials travel in the part of
the blood called plasma. Plasma contains 90% water and 10% of dissolved
food, oxygen, and waste.
This is why water is so essential for our bodies. Our blood contains lots and
lots of water!
Blood is composed of 4 materials
1. Plasma – the fluid part of blood. It contains water, minerals,
nutrients, sugars, proteins, and other substances.
2. Red blood cells – cells that carry oxygen rich blood to your body. Each
RBC contains hemoglobin , a protein, that carries the oxygen and gives
the blood its red color.
3. Platelets – tiny particles in the blood that clump together to form
clots.
4. White blood cells – cells that destroy pathogens.
2 TYPES OF BLOOD CELLS
Red blood cells take up oxygen in the lungs and deliver it to cells
everywhere in the body. Red blood cells are produced in the bones (bone
marrow).
White blood cells are your body’s disease fighters and work with your
IMMUNE SYSTEM. Some white blood cells recognize disease-causing
organisms (bacteria) and alert the body that it has been invaded. Other
white blood cells will surround the “invader” and kill it.
**In the Immune system, white blood cells work with antibodies to prevent
or kill illnesses.