24 Questions
What is collateral ventilation?
Ventilation of alveoli via pathways that bypass the normal airways
Which treatment approaches are supported by collateral ventilation?
Inspiratory holds and breathing control
What is the purpose of collateral ventilation when airways are obstructed?
To preserve ventilation and gas exchange in distal parts of the lung
In adults, how many pores of Kohn are present on average in each alveoli?
5 to 20 pores
What is the function of pores of Kohn?
To improve gas exchange between alveoli
Why are pores of Kohn not present in infants under the age of one?
Due to lack of lung maturity
What is the age at which Pores of Kohn develop according to the text?
Around 4 years old
Where are Pores of Kohn found in greatest numbers?
In the apical portions of upper and lower lobes
What is the effect of aging on RColl in humans according to the text?
RColl decreases
What happens to the lungs without the negative pressure between the pleural spaces?
They collapse
How many lobes does the left lung consist of?
Two lobes
Which membranes cover the lungs as mentioned in the text?
Visceral and parietal pleura
What is the purpose of collateral ventilation in the respiratory system?
To provide an alternative pathway for gas exchange when the airways are obstructed
What physiotherapy treatment approaches are specifically mentioned in the text as being supported by collateral ventilation?
Inspiratory holds and breathing control
How many pores of Kohn are on average found in each adult alveoli?
5-20
What is the main function of collateral ventilation in the context of lung obstruction?
Preserve ventilation and gas exchange beyond obstructions
What do pores of Kohn facilitate in adult lungs?
Collateral ventilation
When are pores of Kohn not present according to the text?
In infants under the age of one
What is the primary purpose of clearing sputum 'higher' up the bronchial tree?
To mobilize retained sputum for expectoration
What does the development of much larger pathways in emphysema result from?
Alveolar wall destruction
What supports the position of the lungs within the chest cage?
Negative pressure between the pleural spaces
Which statement best describes the function of pleural fluid in the pleural cavity?
To create surface tension that pulls the lungs together
What happens to the lungs in the absence of negative pressure between the pleural spaces?
The lungs collapse due to lack of support
How does aging affect RColl in humans based on the text?
Decreases RColl possibly due to pore enlargement
Learn about collateral ventilation, an important concept in physiotherapy that supports treatment approaches such as inspiratory holds and breathing control. Explore how collateral ventilation can help in getting gas into the alveoli even when the main airway pathway is obstructed.
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