BIO 282 Lecture Notes - Lecture 25: Circulatory System, Blood Vessel, Gas Exchange
Document Summary
Memorize fick"s law of diffusion and the variables that regulate diffusion of gases. Very nice figure that was completed in class. These changes are detected by the chemoreceptors in our blood. True or false: as a result of the k+ channels closing, the membrane will hyperpolarize. If the leak channels for k+ are blocked, then it cannot affect the vm. If the leak channels for k+ are blocked, then it cannot affect the vm of the cell, so the other ions take over and the cell actually depolarizes (becomes more positive) Pressure and volume are inversely related (boyle"s law). Changes in pressure in the chest cavity due to contraction of diaphragm and other muscles drives air into or out of the lungs. Air flows into the lungs because the total pressure of the air outside is greater than in the lungs. Looking at earlier figure, but with more information.
