PATHOLOGY MCQ
RESPIRATORY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
When the diapragm relaxes and moves back up, the lungs are ____
|
|
expanding with air
|
|
|
shrinking-pushing air out
|
|
|
Either A or B
|
|
|
None of the above
|
Explanation:
Detailed explanation-1: -When you breathe out (exhalation), the diaphragm moves up and the chest wall muscles relax, causing the chest cavity to get smaller and push air out of the respiratory system through the nose or mouth.
Detailed explanation-2: -Your diaphragm tightens and flattens, allowing you to suck air into your lungs. To breathe out (exhale), your diaphragm and rib cage muscles relax. This naturally lets the air out of your lungs.
There is 1 question to complete.