Mechanism of Breathing
Remember to follow along in your workbook to get the most out of this course!
By the end of this module, you should be able to...
- Define Boyle’s law and understand how it applies to breathing
- Identify and define the different pressures that control breathing
- List the events that take place during inhalation and exhalation
- Define the Hering Breur reflex and the part it plays in preventing lung injury
- Define and Identify the different lung volume measurements
High Yield Content
- Boyle’s law: volume of gas is inversely proportional to pressure
- Gases flow from areas of high pressure to areas of low pressure
- When atmospheric pressure exceeds intrathoracic pressure, air flows into the lung
- When intrathoracic pressure exceeds atmospheric pressure, air flow out of the lungs
- Hering-Breuer reflex prevents overinflation of lungs during inahlation
- CO2 is the main chemical that stimulates respiration (NOT O2!!)
- Normal tidal volume = 500ml