Lung Structure And Ventilation (breathing) Flashcards

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1
Q

What happens to the intercostal muscles when you breathe in?

A

They contract and they move up and out

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2
Q

What happens to the intercostal muscles when you breathe out?

A

Your intercostal muscles relax and moves down and in

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3
Q

What happens to the diaphragm when you breath in?

A

The diaphragm contacts and flattens.

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4
Q

What happens in the diaphragm when you breath out?

A

The diaphragm relaxes and curves upwards

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5
Q

INHALE
Due to the movement of ribcage and diagram:
The volume ________ inside the thorax.
The pressure ________ inside the thorax.
The pressure inside the lungs becomes ______ than the atmospheric pressure.
Air moves _____ lungs to equalise the pressure.

A

Increases
Decreases
Lower
Into

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6
Q

EXHALE

Due to the movement of ribcage and diagram:
The volume ________ inside the thorax.
The pressure ________ inside the thorax.
The pressure inside the lungs becomes ______ than the atmospheric pressure.
Air moves _____ lungs to equalise the pressure.

A

Decreases
Increases
Higher
Out

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