BIOL 2030 Lecture Notes - Lecture 17: Integument, Rapd, Fish Fin
17 Sep 2015
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Subphylum vertebrata fishes ii lecture 17: fished: notochord with muscles attached, early vertebrate endoskeleton, exoskeleton mainly ca2, main tissues that are involved in maintaining salt and water balance, 1. Skin covers a large part of the surface area, its in direct contact with water. Its not an active component, more of a passive component with regard to osmoregulation strategies. Sa is around the same as the skin: 2. Gills active component of osmoregulation: 3. Gi tract active component of osmoregulation: 4. Kidney active component of osmoregulation: 5. Integument (tough outer protective layer) acts more as a barrier not involved as much as 1-4 (involved in transporting salt and water) in osmoregulation. Osmoregulation freshwater (fw: freshwater actinopterygii (teleost) In fw, internal fluids are hyperosmotic relative to water: problem they face = consequence of the concentration gradients of electrochemical gradient. Osmoregulation saltwater (sw: marine actinopterygii (teleost) In sw, internal fluids are hyposmotic relative to water.
