BPK 142 Lecture Final!!!!|222 Exam Latest 2024 Solved 100% Correct|35 Pages

Respiratory system - ️️consists of: nose, pharynx, larynx, trachea, bronchi, lungs Bronchi - ️️primary, secondary, tertiary bronchi → terminal + respiratory bronchioles → alveolar ducts → alveoli With branching, supportive cartilage is gradually replaced by smooth muscle What is a major effect on airway resistance? - ️️Contraction + relaxation of smooth muscle on bronchioles constricts or dilates → effects airway resistance Alveoli - ️️small, thin walled sacs that have capillary beds in their walls; sites of gas molecule (O2 + CO2) exchange b/t air + blood Respiratory membrane - ️️alveolar-capillary membranes that separate air molecules in alveoli from blood in capillaries Lungs - ️️contain conducting airways, alveoli, blood vessels, elastic tissue Boyle's Law - ️️if temperature remains constant, there is an inverse relationship b/t pressure + volume - volume of any gas varies inversely w pressure on it (if pressure is doubled, volume is halved)