ERTH 2401 Lecture : Lecture18-MetabolismandGrowth.doc

• School: Carleton University
• Department: Earth Sciences
• Course: ERTH 2401
• Professor: Claudia Schroder- Adams

Document Summary

Dinosaurs models at the time of richard olsen. How long does it take a velociraptor to reach adult size: 5 years. Ectothermy and endothermy are more meaningful: cold/warm blooded are general terms, the blood is not actually cold or warm, but it instead refers to methods of temperature regulation. Terms refer to: body temperature regulation, variation in body temperature, level of resting metabolism. Endothermy: endothermic organisms regulate their body temperature internally and maintain a nearly constant temperature no matter what the conditions are like outside the body. Ectothermy: ectothermic organisms regulate their body temperature externally and the body temperature responds directly to temperatures of the environment. Body temperature variation: variable or constant, homeotherms, organism in which the internal body temperature remains constant. Poikilotherms: organisms in which the internal body temperature varies. Endothermy is not superior or inferior to ectothermy, nor is homeothermy superior to poikilothermy. They are metabolic strategies which are suited to different anatomies and behaviors.