PHGY 210 Lecture 14: Lecture 14 NTC
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In some other cases, we may be overhydrated from drinking too many liquids. Hence, hormones are secreted and transported to the kidneys in order to regulated kidney function to maintain water balance. They can be seen in cross section of cardiac cells: the distance from a cardiac cell to the adjacent capillary is around 5 m. Since the distance is short, diffusion occurs readily. Hence, the cell doesn"t need a respiratory system to provide itself with o2. The alveoli are also closely surrounded by capillaries. Hence the distance the blood needs to travel from the capillaries to the alveoli is very short. Air will then diffuse through the alveolar membrane, interstitial space, the blood plasma, rbc membrane and finally o2 will bind to a heme group in rbc: dr. lauzon taught this concept of diffusion of o2. If any ambiguity, please refer to her lectures: oxygenated blood will be then be transported to the heart and pumped throughout the whole body.