Field Internship Student Data Acquisition Project. (FISDAP) Airway Practice Exam

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What is the result of oxygen diffusion from alveoli to blood?

Lowered blood pressure
Increased carbon dioxide levels
Higher oxygen saturation in blood
Increased lung volume

The correct answer is: Higher oxygen saturation in blood

The diffusion of oxygen from the alveoli into the blood occurs as a result of the concentration gradient between the high concentration of oxygen in the alveolar air and the lower concentration in the deoxygenated blood. This process is essential for oxygenating the blood, as it allows oxygen to enter the red blood cells where it binds to hemoglobin. When this diffusion takes place effectively, it results in a higher oxygen saturation level in the blood, which is crucial for delivering adequate oxygen to tissues and organs throughout the body. Higher oxygen saturation is an indicator of the blood's ability to transport oxygen, which is vital for cellular metabolism and overall functioning of the body. Thus, the increase in oxygen saturation in the blood is a direct and beneficial outcome of efficient gas exchange in the lungs.