Resperatory System Flashcards
What is boyle’s law?
Volume changes lead to pressure changes which lead to the flow of gases
What leads to the flow of gases?
Volume changes, which then cause pressure changes
What is the number one rule with gasses?
Gasses always fill their container
What way does the diaphragm move?
Inferiorly
What lifts the ribcage?
Intercostal muscles
What do the intercostal muscles do?
They lift the ribcage
What decreases during inspiration?
Pressure decreases
When does pressure decrease?
During inspiration
How does expiration work?
The lung’s elasticity cause it to happen
What does the lungs elasticity do?
It causes expiration
What is the process of respiration?
Pulmonary ventilation, external respiration, transport of respiratory gases, internal respiration
What are the parts of the pharynx?
Nasopharynx, oropharynx, and laryngopharynx
What is inspiratory reserve volume?
The absolute most air you can inhale
What is the absolute most air you can inhale called?
Inspiratory reserve volume
What is the absolute most air you can exhale called?
Vital capacity
What is vital capacity?
The absolute most air you can inhale
What is residual volume?
The amount of air you normally breathe in
What is the amount of air you can’t get rid of called?
Residual volume
What is total lung capacity?
The vital capacity plus ***
What is airway resistance?
Friction versus the cross sectional area
What is friction versa the cross sectional area called?
Airway resistance
What does alveolar surface tension do?
It tries to decrease alveolar size
What tries to decrease alveolar size?
Alveolar surface tension
What prevents lung collapse?
Surfactant
What does surfactant do?
It prevents lung collapse
What is lung compliance?
The stretchiness of the lungs
What is the stretchiness of the lungs called?
Lung compliance
What does lung compliance cause?
The detensibility of tissue and AST
What causes the detensibility of tissue and AST?
Lung compliance
Describe pleurae
A thin, double-layered serosa
What are the two types of pleurae?
Parietal and visceral
What is in the pleurae?
The pleural cavity and fluid
What does fluid in the pleurae do?
It prevents separation
What prevents lug separation?
The fluid of the pleurae
