BIOB33H3 Lecture Notes - Eosinophil, Pulmonary Valve, Left Coronary Artery
15 Dec 2012
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Document Summary
The cardiovascular system functions as a system to transport numerous substances throughout the body such as: nutrients, oxygen and carbon dioxide, hormones and ions. Transports leukocytes (white blood cells) to aid in fighting infectious agents. Formed elements: blood cells and cell fragments that are suspended in the plasma, and include: Erythrocytes (red blood cells): transport oxygen and carbon dioxide. Leukocytes (white blood cells): function in the immune system. Plasma (mostly fluids) - makes up about 55% of the volume of whole blood. 1% other solutes (electrolytes, organic nutrients, organic waste) Plasma proteins: there are three major classes of protein in the blood (of the 7% of proteins) 60% albumin contributes to the osmotic pressure, transports fatty acids and steroids, smallest of the proteins. 35% globulins - act as immunoglobulins (antibodies) and act as transport proteins (transport ions and hormones) 4% fibrinogen - involved in blood clotting, largest of the proteins.
