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Please find your answer below to the asked query:
Option 3 is correct.
Normal tidal expiration is passive and there is no muscle contraction. Expiratory muscle contraction is always accessory. When you force expiration, expiration muscles come into play. Abdominal muscles and intercostals are expiratory muscles.
Regards
Please find your answer below to the asked query:
Option 3 is correct.
Normal tidal expiration is passive and there is no muscle contraction. Expiratory muscle contraction is always accessory. When you force expiration, expiration muscles come into play. Abdominal muscles and intercostals are expiratory muscles.
Regards