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(a) What is Apnoea ? (b) What are its c...

(a) What is Apnoea ? (b) What are its causes? (c) What is Cheyne-stokes breathing ?

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(a) Apnoea : It is the temporary cessation or stoppage of breathing.
(b) Causes : (i) Low `CO_(2)` tension in blood. (ii) Swallowing of food, Gi) Iniection of adrenaline. (iv) Stimulation of the sensory fibres of vagus nerve.
(c) In some abnormal cases respiration and apnoea occur alternately . This is called Cheyne-stokes breathing.
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