BIOL 104 Lecture Notes - Lecture 1: Homeothermy, Evaporation, Ectotherm
3 Feb 2017
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In particular, we are interested in how this steady-state is maintained. If the internal environment changes too much, it can be fatal. O(cid:373)e re(cid:272)eptor so(cid:373)ewhere se(cid:374)ses your (cid:374)eed for water. Because increase in body temperature can be dangerous. Heat can be exchanged (figure 25. 2 on page 506: conduction heat is conducted from one structure to another. Example: getting into a got bathtub, heat goes from water to you. Similarly, picking up heat from surrounding structures such as a hot rock: convection movement of air or water past body surface. Example: wind-chill is caused by wind sucking heat out of body: radiation electro-magnetic waves coming from a warm substance to body. Example: it"s hotter i(cid:374) the su(cid:374) tha(cid:374) i(cid:374) the shade: evaporation evaporation of water from body surface causing cooling. Example: feeling cold coming out of a pool or shower. One of the few animals with sweat glands over most of the body surface (horses are another example of this)
