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The Respiratory System and the Skin > 12.3 Pulmonary Ventilation > Flashcards

12.3 Pulmonary Ventilation Flashcards

1
Q

What is pulmonary ventilation?

A

circulation of air into and out of the lungs to continually replace the gases in the alveoli with those in the atmosphere

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2
Q

What is inspiration?

A

active process of drawing of air into the lungs

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3
Q

What is expiration?

A

passive process of movement of air out of the lungs

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4
Q

What are the two membranes that surround each lung?

A

parietal pleura
visceral pleura

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5
Q

What is the parietal pleura?

A

membrane that lines the inside of the chest cavity

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6
Q

What is the visceral pleura?

A

membrane the lines the surface of the lungs

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7
Q

What is the pleural space?

A

narrow space between the parietal and visceral pleura

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8
Q

What is the parietal pressure?

A

negative pressure in the pleural space

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9
Q

What main muscle drives inspiration?

A

diaphragm

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10
Q

What is the diaphragm?

A

large skeletal muscle that is stretched below the ribs between the abdomen and chest cavity

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11
Q

What happens during contraction of the diaphragm and intercostal muscles?

A

the chest cavity is pulled down and out allowing for inspiration

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12
Q

What is forced expiration?

A

contraction of the abdominal muscles pressing up on the diaphragm forced the chest cavity up

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13
Q

What is spirometry?

A

measurement of the volume of air entering or exiting the lungs at the various stages of ventilation

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14
Q

What is tidal volume?

A

amount of air that moves in and out of the lungs with normal light breathing

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15
Q

What is expiratory reserve volume?

A

volume of air that can be expired after a passive resting expiration

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16
Q

What is inspiratory reserve volume?

A

volume of air that can be inspired after a relaxed inspiration

17
Q

What is the functional residual capacity?

A

volume of air left in the lungs after a resting expiration

18
Q

What is the inspiratory capacity?

A

maximal volume of air which can be inhaled after a resting expiration

19
Q

What is the residual volume?

A

amount of air that remains in the lungs after the strongest possible expiration

20
Q

What is vital capacity?

A

maximum amount of air that can be forced out of the lungs after first taking the deepest breath possible

21
Q

What is total lung capacity?

A

vital capacity plus residual volume

The Respiratory System and the Skin (7 decks)

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