breathing Flashcards

1
Q

what is breathing?

A

rib cage and diaphragm

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2
Q

what is inhalation?

A

ribs upward & outward and diaphragm pushes down

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3
Q

what is exhalation?

A

ribs inward & downward and diaphragm pushes up

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4
Q

what is the medulla?

A

breathing center

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5
Q

what is the medulla sensitive to?

A

[co2]

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6
Q

what happens if there is high [co2] for the medulla?

A

nerve impulses from the medulla act on the rib muscles and the diaphragm

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7
Q

what does high breathing rate cause?

A

low [co2] (feed back mechanism)

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8
Q

what is the feedback mechanism?

A

homeostasis

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