EMBRYOLOGY
RESPIRATORY SYSTEM
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
20% oxygen and 4% carbon dioxide
|
|
|
16% oxygen and 4% carbon dioxide
|
|
|
79% nitrogen and 20% oxygen
|
|
|
20% oxygen and four hundredths of 1% carbon dioxide
|
Detailed explanation-1: -Inhaled air contains approx 21%oxygen, 0.04% carbon dioxide and 79%nitrogen while exhaled air contains approx 16% oxygen, 4% carbon dioxide and also 79% nitrogen. The only difference between them is the varying levels of oxygen and carbon dioxide.
Detailed explanation-2: -Answer: The exhaled air contains more carbon dioxide because the carbon dioxide produced during respiration is removed out of the body as the exhaled air during the process of respiration.
Detailed explanation-3: -The air which we breathe in and breathe out is not pure oxygen or carbon dioxide respectively. Inhaled air is a mixture of different gases present in the atmosphere. It contains around 78% nitrogen, 21% oxygen, 0.04% of carbon dioxide and other gases.
Detailed explanation-4: -Exhaled air is composed of 16% oxygen, 78% nitrogen, 4% carbon dioxide, 1% of the other inert gases and it’s saturated with water vapour.