Biology 2601A/B Lecture Notes - Lecture 20: Opsanus, Intertidal Zone, Basement Membrane
30 Nov 2015
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Water, water everywhere nor any drop to drink". Osmolality of salt water: 1000, concentrated with many ions. Ocean water has consistent salinity and ion compositions and concentrations (34 g/kg) Very different from fresh water: 0. 5 g/kg. 3 compartments: water makes up 60 percent of body mass. Interstitial: matrix in which ions are dissolved, volumes for cells and tissues, hydrostatic pressure (skeletal properties rigidity) Figure 27. 2 the three major types of body fluids are closely juxtaposed: Figure 27. 8 the fundamental principles of cell-volume regulation: Kidneys help to keep the extracellular uids at a constant osmotic pressure. At the cell, k+ is the principle solute. Get rid of ions and stuff to maintain isosmotic state of cell. Humans are extreme regulators, we regulate the interstitial fluid and blood (maintain by kidneys), Take a cell and put it into dilute solution cell expands environment of cells don"t experience these fluctuations. If you follow the line (conformer) passive to the environment.
