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Breathing and Exchange of Gases

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Biology

Subject Chosen

Biology

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CBSE Gujarat Board Haryana Board

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Class 10 Class 12
Write a note on rate of respiration.

Rate of respiration : The rate of respiration is slightly quicker in women than in men. In normal breathing, expiration succeeds inspiration and is followed by a slight pause of Inspiration-expiration-pause. In sick babies, this order is sometimes reversed and the sequence

becomes : inspiration-pause-expiration. This is described as inverse breathing.

Normal rate per minute

In newly born → 40

At twelve months → 30

From two to five years → 24

In adults → 10-20

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Oxygen is carried by haemoglobin as?

Oxyhaemoglobin.
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Name the cavity having lungs.

Thoracic cavity.
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70% of carbondioxide is transported as ?

Bicarbonate
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By what amount the solubility of carbondioxide is more than the solubility of oxygen?

20 - 25 times
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What is the partial pressure of oxygen in  oxygenated blood ?

95 mm Hg
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