Biology 2601A/B Lecture Notes - Lecture 7: Thermostat, Blood Sugar, Viscosity
26 Oct 2013
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Document Summary
Animals can conform and regulate at the same time. Water temperature may be considerably warmer in rivers, so body temperature of salmon would also increase. Conforming with regards to temperature but maintaining with regards to chloride concentration. Homeostasis internal constancy and the physiological regulatory systems that automatically make adjustments to maintain it (in terms of animals) Blood flow, heart rate, breathing rate, etc. Condition of stable internal environment which usually requires extensive feedback mechanisms (in terms of plants) Hormonal for example, insulin and glucagon regulate mammalian blood sugar. Molecular for example, many cell-signaling pathways that regulate cytoplasm composition. Nerve-mediated for example, vaso-constriction and vaso-dilation regulate heat loss in vertebrates. Biochemical maintaining rates of reaction by altering pathways and enzymes. Issue associated with climate change and more problematic with higher altitudes. Maintain performance in the face of varying conditions. Requires a shift away from the acute response. Plasticity on the order of hours to days to weeks.
