modification of breathing rate Flashcards

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1
Q

how do we breath during rest

A

about 15 times per minute which is the average

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2
Q

what happens when we take part in strenuous physical activity like playing soccer or running a race

A

our bodies require more oxygen so that more food can be broken down by cellular respiration to produce extra energy required for the activity

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3
Q

what happens when more energy is releases during cellular respiration

A

the body need to get rid of extra carbon dioxide

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4
Q

what happens as a result of physical activity

A

the rate of cellular respiration increases to release more energy

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5
Q

what happens as cellular respiration increases

A

more carbon dioxide is released into the blood

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6
Q

what ten happens to the medulla oblongata

A

it sends impulses to the heart and to breathing muscles

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7
Q

what happens as a result of the increased carbon dioxide

A

the medulla oblongata of the brain becomes simulated

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8
Q

what happens as a result of the medulla oblongata sending impulses to the heart and to the breathing muscles

A

the heart beats faster and blood carrying carbon dioxide is pumped faster to the lungs from the tissues

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9
Q

what cause breathing movement to speed up

A

breathing muscles ( the diaphragm and intercostal muscles ) cause the breathing movements ( inhalation and exhalation) to be speeded up

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10
Q

what also helps to push up the diaphragm with greater force

A

the abdominal muscles

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11
Q

what results from these fast breathing movements

A

carbon dioxide is removed out of the body more quickly and more oxygen is taken in rapidly and supplied to the tissues in this way the levels of oxygen and carbon dioxide are brought back to their normal limits

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12
Q

what is homeostasis

A

the ability of the body to maintain the composition of the blood more or less constant

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