BIO-0014 Lecture Notes - Lecture 24: Surface Tension, Hemoglobin, Breathing
18 Apr 2017
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Problem: blood is mostly water, difficult to carry oxygen through blood. Co2 slightly more polar than o2- easier to react with h2o. Solubility co2 in water/ solubility o2 in water = 20. Premature babies have inactive type 2 cells- do not produce enough detergent- difficult to breathe. Source of o2: o2 levels constant, infinite supply. Sink of co2: co2 levels constant, constantly exhaling as gained. Inspiratory volume/ expiratory volume = volume of air breathed in and out. Tidal volume = inspiratory or expiratory volume during rest. Inspiratory reserve volume = 3000 ml, additional air that can be forcibly inhaled after the inspiration of a normal tidal volume. Expiratory reserve volume = 1000 ml, additional air that can be forcibly exhaled after the inspiration of a normal tidal volume. Functional residual capacity- total volume of air left in lungs after quiet tidal expiration. Decreases with age because number of alveoli decrease.
