BIO 203 Lecture Notes - Lecture 1: Ideal Gas Law, Basal Metabolic Rate, Homeostasis
16 Nov 2016
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Document Summary
Physiologists are interested in how living systems work . Biological study of living organisms and their parts. Study of how cells (or organisms) interact with their environment to obtain the things required for life ( vital substances) Any system that allows for the exchange of material ( vital substances) from: Ex: respiratory system (o2/co2), digestive system (nutrients/h2o), urinary system (excretion/h2o), circulatory system (distribution) If a cell is within a mm or so of the skin, it may directly absorb nutrients (no circulatory/exchange system) Larger animals require separate systems for exchange. Circulatory system is within a mm of cells in the body and interacts with other systems. Groups of cells with common structure and function (made up of all 4 types) Organization of different tissues to perform specific functions. Several organs organized to carry out major body functions. Can tolerate only a limited range of conditions. Is constrained by the laws of physics and chemistry.
