BIO310H5 Lecture Notes - Lecture 1: Organism, Action Potential, Homeostasis
Document Summary
How cells behave, communicate and achieve their goals. Frog: have legs muscles consisting of muscle cells. Application of nervous system to muscle system, how the thick and thin filaments actually work. Adaptation : occurs over a course of generation; is irreversible. Acclimatization: getting used to the environment by changing behavior. Maintaining a balance in the internal environment when three is fluctuation in the external environment. Body temperature has to be maintained : cellular functions can only be done in a certain range of temperature. Glucose : high body glucose after breakfast consumption must be back to normal before next meal ; controlled by the negative feedback. Internal fluctuations are smaller than the environmental fluctuation. Some animals are able to regulate internal environment, some aren"t, but they manipulate their internal environment in reaction to the but they manipulate their internal environment in reaction to the external environment. Cold-blooded: changes body temperature in response to the environment.
