PSL301H1 Lecture Notes - Lecture 2: Progenitor Cell, Membrane Transport Protein, Cytoskeleton

• School: UTSG
• Department: Physiology
• Course: PSL301H1
• Professor: Michelle French

Document Summary

Transports gases, nutrients, hormones and metabolic wastes. Regulates composition of interstitial fluid (e. g. ph, ions, water, etc. ) Restricts fluid loss at injury sites via blood clotting. Regulates body temperature by absorbing and redistributing heat. 5 l blood in 70 kg male (about 7% of the total body weight), 4 l blood in 58 kg female. A sample of whole blood will consist of 46-63% plasma, and 37-54% formed elements. The hematocrit is equal to the % of total blood volume occupied by packed (centrifuged) red blood cells. Normal hematocrit = 37-(cid:1009)(cid:1008)%, (cid:449)hi(cid:272)h is e(cid:395)ual to the pe(cid:396)(cid:272)e(cid:374)tage of (cid:862)fo(cid:396)(cid:373)ed ele(cid:373)e(cid:374)ts(cid:863) Plasma is the fluid constituent of the blood, within which cellular elements are suspended. Most plasma proteins are made by the liver. In general, they are responsible for generating colloid osmotic pressure and act as a buffer to regulate the ph.