gas exchange in lungs Flashcards

1
Q

what is the tube called that air passes into the lungs through?

A

trachea

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2
Q

what prevents trachea from collapsing during inhalation?

A

rings of cartilage

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3
Q

what are the 2 smaller tubes that the trachea splits into called?

A

bronchi

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4
Q

further into the lungs, bronchi subdivide into many smaller tubes called what?

A

bronchioles

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5
Q

bronchioles end in tiny air sacs called what?

A

alveoli

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6
Q

what happens in alveoli?

A

gases diffuse in and out of blood streams

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7
Q

there is millions of alveoli, what does this mean for the lungs?

A

the lungs have a huge surface area

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8
Q

alveoli have very thin walls, what does this do?

A

makes diffusion path short

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9
Q

do alveoli have good blood supply?

A

yes

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10
Q

by breathing, what is the impact on the rate of diffusion?

A

increased rate of diffusion

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11
Q

breathing brings what and takes away what from alveoli?

A

brings in oxygen and takes away carbon dioxide

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12
Q
A
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