BSC 197 Lecture Notes - Lecture 32: Hypertension, Renal Artery, Renal Cortex
29 Dec 2016
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Osmoregulation-the balancing of water and solutes in physiological systems: osmoconformers: some marine animals that have same osmolarity as environment, osmoregulators: all other animals that maintain a range of osmolarity by regulated function. Marine sh-high salt concentration in water will tend to cause animal to lose water and take up salt: to balance, the animal will need to excrete salt and consume water. Freshwater sh-low salt concentration in water will tend to cause animal to lose salt and take up water: to balance, the animal will need to excrete water and retain consumed salts. Land animals-low water concentration will tend to dehydrate the animal: to balance, the animal will need to consume and retain water. Osmoregulation comes at a signi cant energetic cost because it often uses active transport to maintain a gradient between the animal and the environment. Nitrogenous waste from breakdown of proteins and nucleic acids.
