What is the name of the epithelial cells which make up alveoli?
Type 1 pneumocytes
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What are the names of the secretory cells which release surfactant?
Type 2 pneumocytes
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What is the name given to the area where there is no gas exchange in the conducting zone? The volume is ~150mL
Anatomic dead space
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What is the name given to the region of the lungs where there is inadequate perfusion for gas exchange in the respiratory zone? The volume is usually <5mL
Alveolar dead space
9 of 24
What is the equation for physiological dead space?
Anatomic dead space + alveolar dead space
10 of 24
What is the value of tidal volume?
500mL
11 of 24
What is the usual value for respiratory frequency at rest?
12 breaths/min
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What is the equation for minute ventilation?
Tidal volume x respiratory frequency
13 of 24
What is the usual value for minute ventilation?
6000 ml/min
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What is the equation for dead space ventilation?
Volume of dead space x respiratory frequency
15 of 24
What is the usual value for alveolar ventilation (= minute ventilation - dead space ventilation)?
4200 ml/min
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What cells mainly make up the conduction region of the respiratory system?
Pseudostratified ciliated columnar epithelium
17 of 24
What cells mainly make up the bronchioles and alveolar ducts?
Simple cuboidal epithelium
18 of 24
What are the main SNS receptors found on the smooth muscle of the of the respiratory tract?
Beta 2
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What are the main PsNS receptors found on the smooth muscle of the respiratory tract?
M3
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How many lobes is the right lung divided in to?
3
21 of 24
How many lobes is the left lung divided into?
2
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What is the name of the cells which secrete pleural fluid?
Mesothelial cells
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How much parietal fluid fills the parietal cavity?
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