PHYSL212 Study Guide - Packed Red Blood Cells, Oncotic Pressure, Red Blood Cell

• School: University of Alberta
• Department: Physiology
• Course: PHYSL212
• Professor: Saswati Das

Document Summary

Present inside blood vessels but many components also reside in tissue. Blood cells sediment in tube due to gravity. Functions of blood: transport oxygen, carbon dioxide, nutrients, waste products, ions, hormones, and heat, regulation ion and ph balance, defense immune protection, hemostasis prevention of blood loss. % of total blood volume occupied by packed red blood cells x/y x 100%, where y: plasma (~55% blood volume) and x: white blood cells (<1% blood volume) + red blood cells (aka erythrocytes, ~45% of blood volume) 42 +/- 5% (f), 47 +/- 5% (m) Substance being transported (carbon dioxide, nutrients, waste products, hormones) Plasma proteins (distribution of body water, buffering, transport, defense, hemostasis) Blood cell types and functions: red blood cells: transport of oxygen, white blood cells (wbc or leukocytes, polymorphonuclear granulocytes. Basophils (<1%, inflammation: monocytes (2-8%, phagocytes and immune defense, lymphocytes (20-40%), b cells: antibody production, humoral immunity, t cells: cellular immunity. Cytokines are hormone-like in their mode of action.