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Physl Part 2 > Respiratory 12 > Flashcards

Respiratory 12 Flashcards

1
Q

What is the Intrapleural pressue?

A

The pressure that is inside the pleura

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2
Q

What is the Transpulmonary pressure derived from?

A

The difference in alveolar pressure minus the intrapleural pressure

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3
Q

What is the Intrapleural pressure?

A

The pressure that is inside the intrapleural space when we find the 10mL volume of fluid

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4
Q

What does the Intrapleural space act as for alveoli?

A

A vacuum

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5
Q

What is the sign of the intrapleural pressure and why?

A

It is always negative because it is always subatomic

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6
Q

What would cause the lungs to collapse?

A

The intrapleural pressure being the same as the alveolar pressure

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7
Q

What is the Alveolar Pressure?

A

The pressure of the air inside the alveoli

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8
Q

Why is alveolar pressure a dynamic property?

A

Because the flow is driven from the difference between the alveolar pressure and the atmospheric pressure

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9
Q

What happens when the alveolar pressure is equal to the atmospheric pressure?

A

The will not be any airflow

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10
Q

What kind of pressure is the transpulmonary pressure?

A

A static pressure

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11
Q

What is the transpulmonary pressure dependant on?

A

The intrapleural pressure

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12
Q

What is the transpulmonary pressure?

A

The difference in pressure generated between the alveolar pressure and the intrapleural pressure

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13
Q

What is the sign of the intrapleural pressure always?

A

It is always negative

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14
Q

What is the transpulmonary pressure involved in?

A

Determining lung volume

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15
Q

What does Alveolar pressure determine?

A

Airflow

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16
Q

What happens to the Intrapleural pressure as the lungs expand?

A

It becomes more subatmospheric

17
Q

What happens to the transpulmonary pressure as the lungs expand?

A

The transpulmonary pressure increases

18
Q

What happens to the alveolar pressure as the lungs expand?

A

The alveolar pressure becomes subatmospheric

19
Q

How will an increase in transpulmonary pressure affect lung volume?

A

It will increase lung volume

20
Q

When is transpulmonary pressure at the maximum?

A

At the end of inspiration

Physl Part 2 (96 decks)

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