BIOL 4160 Chapter : Vertebrate Physiology Ch 3
Document Summary
Figure 3. 3 fluid mosaic model of plasma membrane structure. The plasma membrane is composed of a lipid bilayer embedded with proteins. Integral proteins extend through the thickness of the membrane or are partially submerged in the membrane, and peripheral proteins are loosely attached to the surface of the membrane. Short carbohydrate chains attach to proteins or lipids on the outer surface only. Potassium cation in cell, protein is the anion within the cel. Sodium can possibly diffuse if there is a pathway. Reference point is always inside the cell in biological systems. Law of electrode neutrality- number of pos/negs is equivalent to the same volume inside the cell. Smaller ion, the more water molecules it can react with. When you lose the potassium ions the inside becomes negative. Every cell in your body is a battery with about 0. 0 v. Reverse has to happen to produce an action potential. Bring sodium in to make it less negative through diffusion.
