BIO 12 UNIT 4: Study Notes

PLASMA

Major Components:

1. Water (90-92%): maintains blood volume and transports molecules [source: absorbed from intestine]
2. Proteins (7-8%): maintains osmotic pressure and pH [source: liver]
1. Albumin (maintains blood volume and pressure)
2. Globulins (transport cholesterol); fight infection)
3. Fibrinogen (clotting)
3. Salts (>1%): metabolism; maintains osmotic blood pressure and pH [source: absorbed from intestine]
4. Gases (O2 and CO2): cellular respiration, end products of metabolism [source: lungs and tissues]
5. Nutrients (lipids, glucose, amino acids): provides food/energy for cells [source: absorbed from intestine]
6. Wastes (Urea): excretion by kidneys [source: liver]
7. Hormones, Vitamins, etc.: Aid in metabolism [source: varied]