Homework Answers
Question - The correct path of CO2 moving out from interior part of body is :
alveoli, bronchioles, bronchi, trachea, larynx , pharynx
- TRUE
- FALSE
Ans - TRUE
EXPLANATION : The path followed during inhalation/inspiration(movement of air from outer atmosphere) is
Pharynx ➡Larynx ➡Trachea➡Bronchi➡Bronchioles➡Alveoli
The reverse pathway is followed during exhalation/expiration (CO2 moving out from interior part of body) and that is
Alveoli ➡Bronchioles ➡Bronchi ➡Trachea ➡Larynx ➡Pharynx
So, It is true.
Question 22 - When you breath gently , exhalation results mainly from the relaxation of the chest muscle and diaphram ,and not from pushing air out.
- TRUE
- FALSE
Ans - TRUE
EXPLANATION : Normal exhalation is a passive process. It is the moving of air out of lungs if the pressure within lungs is more than atmospheric pressure.
It is acheived by the relaxation of the diaphram and the external intercostal muscles returning the diaphram and sternum to there normal position .
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