BISC 1112 Lecture Notes - Lecture 14: Osmoregulation, Tonicity, Osmotic Concentration
15 May 2017
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Retinal is a derivative of vitamin a. Pit vipers have it to detect their prey. Solute concentration of a solution, movement of water across selectively permeable membrane. Can nearly completely dry out and survive. Osmoregulation balances marine fish tissues vital for them to survive. Ammonia converted to urea and stored in tissue. Have a gland that gets rid of extra salt. Need to get rid of these aminos. What are the four important processes that give rises to urine? ** exam. A network of dead end tubules connected to external openings. About 25% more concentrated urine than the blood. Passive transport costs nothing unlike active which is expensive. Low osmolarity as it descends water is pouring out. At the bottom very concentrated roughly 1200. As it ascends again releases nacl into kidney. Back at the top it is diluted urine.
