BIOB33H3 Lecture Notes - Lecture 10: Optic Nerve, Conjunctiva, Posterior Chamber Of Eyeball
Document Summary
The cardiovascular system: heart and blood & the senses. 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 to aid in fighting infectious agents. Plasma - makes up about 55% of the volume of whole blood - liquid matrix of blood. 1% other solutes (electrolytes, organic nutrients, organic waste) Plasma proteins: there are three major classes of protein in the blood. 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. Formed elements - makes up about 45% of whole blood - blood cells and cell fragments that are suspended in the plasma, and include: Platelets (<0. 1% of formed elements) - involved in blood clotting.
