When we breathe OUT, our diaphragm rises. The lungs ....., and the space inside becomes smaller. So, air is forced out of the lungs, through the windpipe and out of the nose.

RESPIRATORY SYSTEM

Please wait while the activity loads.
If this activity does not load, try refreshing your browser. Also, this page requires javascript. Please visit using a browser with javascript enabled.

If loading fails, click here to try again

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

When we breathe OUT, our diaphragm rises. The lungs ____, and the space inside becomes smaller. So, air is forced out of the lungs, through the windpipe and out of the nose.

A	expand
B	contract
C	reflect
D	None of the above

Explanation:

Detailed explanation-1: -When you inhale, your diaphragm contracts (tightens) and moves downward. This creates more space in your chest cavity, allowing the lungs to expand. When you exhale, the opposite happens-your diaphragm relaxes and moves upward in the chest cavity.

Detailed explanation-2: -When you inhale (breathe in), air enters your lungs, and oxygen from that air moves to your blood. At the same time, carbon dioxide, a waste gas, moves from your blood to the lungs and is exhaled (breathed out). This process, called gas exchange, is essential to life.

Detailed explanation-3: -When you breathe in, your diaphragm contracts (tightens) and flattens, moving down towards your abdomen. This movement creates a vacuum in your chest, allowing your chest to expand (get bigger) and pull in air. When you breathe out, your diaphragm relaxes and curves back up as your lungs push the air out.

There is 1 question to complete.

PATHOLOGY

PATHOLOGY MCQ

RESPIRATORY SYSTEM