62. Which of the following events occurs during the expiratory phase of respiration?A) Contraction of the external intercostal musclesB) Elevation of the ribsC) Increase in thoracic volumeD) Relaxation of the diaphragmE) Widening of the costal margin

Respiration is the phenomenon of breathing in and out of the air. Breathing in means inhalation.…

Answered: 62. Which of the following events…

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62. Which of the following events occurs during the expiratory phase of respiration? A) Contraction of the external intercostal muscles B) Elevation of the ribs C) Increase in thoracic volume D) Relaxation of the diaphragm E) Widening of the costal margin