BIO 203 Lecture Notes - Lecture 1: Cool Air, Basal Metabolic Rate, Skeletal Muscle
5 Sep 2016
School
Department
Course
Professor
Document Summary
Physiology how cells interact with their environment to promote life by acquiring vital substances. Two types of environment external environment: where animal lives. Exchange occurs between cells and their internal environment. Exchange systems: respiratory system (o2 and co2, digestive system (nutrients/ h2o, urinary system (excretion/h2o, circulatory (distribution) Intracellular fluid: cells exchange intracellular fluid with extracellular fluid: when in a mm distance with the skin, animal can exchange oxygen, carbon dioxide, nutrients, and etc. It can exchange across the surface. (this happens in the case of very small animals). The circulatory system interacts with the specific exchange systems. The specific organ systems that are responsible for exchange are: circulatory system, digestive system, respiratory, integumentary system, excretory system. Basic principles: all life is aquatic, compartmentalized, same fundamental problems, constrained by physics and chemistry, can tolerate only a limited range of conditions. Aquatic: cells are in aqueous environment even if animal doesn"t live in one.
