BSC-1005 Lecture Notes - Lecture 7: Pulmonary Surfactant, Exhalation, Carbonic Anhydrase
Document Summary
**three structural components of blood vessels: connecive issue, smooth muscle, endothelium. Alveoli are the smallest funcional unit of the lungs** Alveoli: pulmonary surfactant detergent that helps to keep the surface moist, and allows the alveoli to remain parially inlated which helps to prevent collapse upon exhalaion and make it easier to reill during inhalaion. Gas exchange difusion of respiratory gasses between atmosphere and blood. **gas molecules from the air are distributed throughout the body in the blood (large-scale). Difusion is only when gas molecules get to the capillary level (small-scale)** Control of breathing: cerebrum voluntary control of respiratory system (decide when to breath)
