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Bitmap Image  |  1995-06-29  |  54.6 KB  |  336x363  |  8-bit (33 colors)  |  [TEXT/LMAN]
   ocr: BODY TEMPERATURE IN MAMMALS AMMALS AND BIRDS are endothermic. This M means that they keep their internal body temperature constant whatever the temperature outside, allowing them to remain active in all weather conditions. When iti is hot, the blood flows near the surface of the skin to lose heat. When iti is cold, the blood Aows away from the surface of the skin to conserve heat. The temperature-regulating mechanism 1S controlled by the hypothalamus in the brain. It detects the temperature ofblood flowing through the brain and triggers shivering or sweating (in mammals), to raise orl lower bo ...