Essential Concepts in Oxygenation
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Last updated 6:06 AM on 2/2/26
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6 Terms
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ventilation
movement of gases from atmosphere to alveoli and visa versa
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diffusion
mechanism by which O2 moves across the alveoli and into pulmonary capillary
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perfusion
O2 leaves alveoli to combine with Hgb (Hb02) or dissolve in blood (PaO2) to be carried to left side of heart
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ventilation depends on
conducting airways- airway diameter
ventilatory muscles- diaphragm, intercostals
thorax- flexability of rib cage
elascticity of the lungs
nervous system/regulators
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ventilalation depends on regulation of
controller (CNS)
brainstem, cerebral cortex, neurons in spinal cord
grouo of effectros (muscles)
muscles that work in coordinated fashion
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Note 
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