Physiology 1021 Lecture Notes - Lecture 9: Carotid Body, 2Hb, Chronic Obstructive Pulmonary Disease

• School: Western University
• Department: Physiology
• Course: Physiology 1021
• Professor: John Ciriello

Document Summary

Functions of the respiratory system: provides o2 to the blood (crucial to making atp goes to mitochondria, removes co2 from the blood (waste, regulates h+ (blood ph homeostasis) Speech (air moves over your vocal cords: microbial defe(cid:374)se (cid:894)(cid:862)(cid:272)lea(cid:374)s ai(cid:396)(cid:863)(cid:895) Metabolize drugs (laughing gas/puffer: traps (proteins and enzymes) and dissolves small blood clots. Lungs are suspended in the thoracic cavity and surrounded by the chest wall: thoracic cavity is separated from the abdominal cavity by the diaphragm. Intraplueral space space between the lung and chest wall. Functions of the conducting zone: has cilia to move dust/waste into the lungs to be coughed out or swallowed (microbial defence, conducts air (deep into the lungs) Function of the respiratory zone: gas exchange (occurs over the alveoli, does(cid:374)"t ha(cid:448)e (cid:272)ilia. Pulmonary ventilation (ve) the amount of air entering the lungs (conducting and respiratory zone) in one minute.