BIOL 121 Lecture Notes - Lecture 1: Thermometer, Organism, Homeostasis
Document Summary
Anatomy, chemistry and physics of living things. Teleological: how it works and why it"s important. Chemical level - molecule in a membrane that encloses a cell. Tissue level layers in the stomach wall. The rate at which biochemical reactions occur in the body. Anabolism the building up (requires energy input) Catabolism the breaking down (doesn"t require energy input) Exchange, metabolism, and sensing and responding all maintain and keep the body working functionally. Exchange material between the cell and its environment. Muscle create force and movement by contracting. Nervous sense and respond, creating communication between two cells electrically that relay information. Set point point at which you want to maintain. Gain how quickly something returns to set point. Effect the rate of enzyme reaction in body. Depending on the stretch, the heart and vessels contract. The pressure causes the baroreceptors to stretch and pump more blood. The ability to turn off the negative feedback inhibition.
