BIO202H5 Lecture Notes - Lecture 1: Frustum, Filter Feeder, Thermoregulation
Document Summary
Physiology: a study of how structures and functions of the body work together to allow for behavioral response to the environment: molecules, cells, tissues, organs and organ systems can help affect physiology anatomy and behavior. Challenges in terrestrial animals: dry all the time, more light, less dense, less viscous (no body support though buoyancy, more effected by gravity, oxygen is easier to extract, no suspended nutrients. Limitations in environment: light, temperature, water, ph, radiation, all the above sustain metabolic activity. If you cannot maintain metabolic activity you cannot sustain life. Size: the smaller frustum empty"s first as it has less sand in it, so it is important to understand size. Its surface area increases by a factor of 4: the volume increases by a factor of 8, surface area to volume ratio decreases. Important physiological implications: determines how much gas you can have.
