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Radha was running on a treadmill at a gr...

Radha was running on a treadmill at a great speed for 15 minutes continuously. She stopped the treadmill and abruptly came out. For the next few minutes, she was breathing heavily fast. Answer the following question.
(a)What happened to her muscles when she strenuously exercised ?
(b) How did her breathing rate changed ?

Text Solution

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(a) Due to continuous exercise her muscles get fatigued due to accumulation of lactic acid in the skeletal muscles. Pain is experienced due to fatigue muscles.
(b) Her breathing rates changes from normal to increased rate because during exercise her muscles require more `O_(2)` (ATP production) so her breathing rate increase to obtain more `O_(2)` from atmosphere.
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