BIOL 112 Lecture Notes - Lecture 44: Angiotensin, Descending Limb Of Loop Of Henle, Osmotic Concentration
9 Jan 2017
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(cid:1005) (cid:395): t(cid:396)a(cid:374)sitio(cid:374) to la(cid:374)d (cid:894)slide(cid:895: order! !, not really dates: evo. mechanisms that allowed certain organisms to maintain terrestrial. (cid:1011) (cid:395)"s f(cid:396)o(cid:373) (cid:374)ew (cid:373)ate(cid:396)ial i(cid:374) (cid:272)h. (cid:1007)(cid:1008) 28-(cid:1007)(cid:1004) (cid:374)ew (cid:395)"s out of (cid:1010)(cid:1007) (cid:395)"s total. Has to be liquid h2o component for any living sys. Nitrogenous wastes can become extremely toxic and have deleterious effects on tissue need to be excreted. Passive processes (concentration gradients set up to maintain homeostasis) Fxns of gills: gas exchange, filter-feeding, excretion of h2o and ions. Atp has to be used to create gradient and hormones decide whether or not gradient is in play: gradients=created bc we need fluids to move (ex: need to get rid of excess solutes) Ammonia: usually in fish-have a lot of available h2o to excrete. Everything is filtered based on size (if small enough to be filtered, will be filtered) Osmoregulatory systems: some sort of tubule structure (filtration, excretion) draped in.
