NEET PG DENTAL EXAM

EMBRYOLOGY

RESPIRATORY SYSTEM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What do we let out when we exhale?
A
oxygen
B
Carbon dioxide
C
lungs
D
None of the above
Explanation: 

Detailed explanation-1: -The carbon dioxide produced is a waste product and needs to be removed. Just like oxygen, carbon dioxide is transferred to blood to be carried to the lungs, where it is removed and we breathe it out.

Detailed explanation-2: -The Respiratory System When you breathe out, the same thing happens – only in reverse. This is how the body gets rid of carbon dioxide. The blood collects carbon dioxide from all over the body and carries it back to the air in the alveoli.

Detailed explanation-3: -Exhalation: When you breathe out, or exhale, your diaphragm relaxes and moves up into your chest cavity. As the space in your chest cavity gets smaller, air rich in carbon dioxide is forced out of your lungs and windpipe, and then out your nose or mouth.

There is 1 question to complete.