Alveolar Gas Lab Report

Decent Essays
The effect of different breathing patterns on alveolar gas compositions.

Introduction
Ventilation is the process where the exchange of oxygen (O2) from the air into the lungs and carbon dioxide (CO2) from the blood into the external environment (Silverthorn, 2013). Respiration is essential for all living organisms to survive. Breathing is part of physiological respiration and is required to sustain life. Our lungs are composed of small sacs called alveoli which facilitate the movement of oxygen and carbon dioxide between the tissue and blood stream. Oxygen is in larger concentrations in the alveoli thus it moves out of the lungs into the blood stream. Blood coming away from lungs is higher in oxygen which is pumped to the heart into the cells, where respiration takes place. Blood now has higher concentrations of carbon dioxide where it will be pumped to the heart and then diffuses into the alveoli of the lungs from the blood stream where it will be exhaled.

Hypoventilation is breathing at an unusually slower rate which increases CO2 concentration in the blood. Hyperventilation is rapid breathing that decreases CO2 concentration in blood. Hyperventilation occurs when one has a panic attack, it is also a symptom of heart and lung disorders. The normal alveolar
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Hemogloblin (Hb) function primarily is to transport oxygen, partial pressure of oxygen is the determining factor of how much O2 binds to hemoglobin. The maximum amount of O2 that can be transported in blood is determined by the amount of Hb available. Refer to figure 1. pH affects the binding of oxygen to hemoglobin, a lower pH results is a decreased % of Hb-O2 saturation and higher CO2 concentration which results in an active tissue which required more oxygen. According to The Bohr Effect, a lower pH results in hemoglobin delivering more O2.

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