Terminate in air pockets or sacs termed alveoli. Many Alveoli a. Right lung has three lobes, left lung has two lobes. Cone-shaped lungs extend from near neck, filling chest inside ribs, with base broad and concave fitting on diaphragm. Occurs in the alveoli.
Passage involves crossing single layer of squamous epithelium surrounded by blood capillaries.
Film of lipoprotein lines inner alveolar surfaces to lower surface tension and prevent them from closing up. Mechanism of Breathing Respiration refers to complete process of supplying oxygen to body cells and ridding body of carbon dioxide. Getting Air to the Lungs a. Vital capacity is maximum volume of air that can be moved in and out during a single breath. Vital capacity is sum of tidal, inspiratory reserve and expiratory reserve volumes.