PSY100H1 Chapter Notes -Vagus Nerve, Melanocyte-Stimulating Hormone, Gastric Bypass Surgery
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PSY100H1 Full Course Notes
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If too cold, ice crystals form within cells damaging the cell membrane. If too hot, proteins necessary for carrying out cell fxns become unstable: higher s. a. : volume ratio = must work harder to maintain core temp, ex. All animals fall within a few degrees of one another: human temp set point = 98. 6f or 37c. In response to cold shivering, and if cold still persists: throid gland increases release of thyroid hormones greater overall metabolic activity, deficits in thyroid activity are often found in people who commonly are cold. Deviations in core temp: fevers above 41 c can cause brain damage, fevers result when pyrogens = chem. by products of bacteria/viruses enter the brain and gradually increase the body"s set point. Warm-sensitive (increase firing as temp increases + inhibit cold-sensitive) Temp-insensitive = retain a fairly steady rate under all temps.
