Biology 2601A/B Lecture Notes - Lecture 5: Arrector Pili Muscle, Heterothermy, Homeothermy
10 Dec 2016
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Penguin can still maintain its constant body temp in water for a long time changes, metabolic rate remains constant within the thermoneutral zone. Basal metabolic rate is if the animal is at rest and has been fasting within this zone. Do this by shivering, vasoconstriction of blood vessels, fluff up fur, Heat from environment: body temp = ambient temp. Ambient temperature can have profound effects on enzymes. We are a minority of the animal kingdom, but we have this very unique adaptation to maintain a constant body temp regardless of changing ambient temp. Heat is derived from internal metabolism body temp is usually higher (37c) Body temperature is constant ambient temp has little effect on our. Homeotherms are a unique adaptation share this with birds and other mammals. High latent heat capacity (water) can draw out a lot of heat, but the foraging. Always defending core body temperature if it starts to drop hypothermia.
