Chapter 5 Respiration When you can not breath, nothing else matters Slogan of the American Lung Association
2 Chapter 5 Respiration When you can not breath, nothing else matters Slogan of the American Lung Association
Respiration is the process bywhich the body takes in and utilizes oxygen(O2) and gets rid of carbon dioxide( co2)
3 Respiration is the process by which the body takes in and utilizes oxygen (O2 ) and gets rid of carbon dioxide (CO2 )
An Overview of Key steps in respiration Pulmonary ventilation O, tra Gas diffusion diffusion Lungs Tissues CO2 transpor
4 An Overview of Key Steps in Respiration
Respiration can be divided into four major functional events Ventilation movement of air into and out of lungs Gas exchange between air in lungs and blood Tb ransport of oxygen and carbon dioxide in the ood Internal respiration: Gas exchange between the blood and tissues
5 Respiration can be divided into four major functional events • Ventilation: Movement of air into and out of lungs • Gas exchange between air in lungs and blood • Transport of oxygen and carbon dioxide in the blood • Internal respiration: Gas exchange between the blood and tissues
Respiratory System Functions Gas exchange: Oxygen enters blood and carbo leaves Regulation of blood pH: Altered by changing blood carbon dioxide levels Voice production: Movement of air past vocal folds makes sound and speech Olfaction Smell occurs when airborne molecules drawn into nasal cavity Protection: Against microorganisms by preventing entry and removing them Metabolism: Synthesize and metabolize different compounds(Nonrespiratory Function of the Lung)6
6 Respiratory System Functions • Gas exchange: Oxygen enters blood and carbon dioxide leaves • Regulation of blood pH: Altered by changing blood carbon dioxide levels • Voice production: Movement of air past vocal folds makes sound and speech • Olfaction: Smell occurs when airborne molecules drawn into nasal cavity • Protection: Against microorganisms by preventing entry and removing them • Metabolism: Synthesize and metabolize different compounds (Nonrespiratory Function of the Lung)