KINE 3012 Lecture Notes - Lecture 2: Hemoglobin, Partial Pressure, Respiratory Minute Volume

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Learn the neurendocrine and the paracrine stuff, go over everything. You didn"t pay too much attention to in slow brutal detail. There is an optimum between flow and ventilation. We can control how constricted blood vessels are in certain regions of the lung. She"s reviewing pressure differences in alveoli, arterioles and venous systems. She is also talking about the hemoglobin again. The gradient between the alveoli and capillaries is stressed again. Gases do not just dissolve in the blood stream because it would not be enough to provide us with what we need. How sticky hemoglobin is to oxygen changes based on several factiors. Po2 in the tissue is lower, at that lower pressure hemoglobin is not as sticky so it releases its oxygen. In the pulmonary capillaries hemoglobin is maximally saturated. In the tissue the more co2 we get the more bicarbonate we make. Partial pressures of gases in the atmosphere; we cannot really do a lot there.

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