01:119:115 Lecture 40: chapter40
15 Feb 2018
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Chapter 40 - basic principles of animal form and function. No animal as large as a dragon could generate enough lift to take off and fly. Concept 40. 2 animal form and function are correlated at all levels of organization. Life is characterized by hierarchical levels of organization, each with emergent properties: animals are multicellular organisms with their specialized cells grouped into tissues. In many animals, nervous tissue is concentrated in the brain. The organ systems of an animal are interdependent. In all but the simplest animals (sponges and some cnidarians) different tissues are organized into organs. In general, endotherms have higher metabolic rates than ectotherms. Bmr or smr: humans in most developed countries have an unusually low average daily metabolic rate of about 1. 5 times bmr an indication of relatively sedentary lifestyles. In contrast to endotherms, the ectothermic python has no temperature regulation costs: like most reptiles, she grows continuously throughout life.
