APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -The air passes through the throat into the trachea (windpipe). The trachea divides into the left and right bronchi. Like a branch, each bronchus divides again and again, becoming narrower and narrower. Your smallest airways end in the alveoli, small, thin air sacs that are arranged in clusters like bunches of balloons.

Detailed explanation-2: -Alveolar Ventilation and Alveolar Oxygen and Carbon Dioxide Levels. ). Each inspiration brings into the 3 L of gas already in the lungs approximately 350 mL of fresh air containing about 21% oxygen, and each expiration removes about 350 mL of air containing about 5% to 6% carbon dioxide.