MICROANATOMY

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.

Detailed explanation-2: -Air is composed of 78% nitrogen and 21% oxygen.

Detailed explanation-3: -In turn, exhaled air contains: nitrogen – 78% oxygen – 17%

Detailed explanation-4: -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-5: -The percentage of nitrogen in the air is 78%. Oxygen occupies 21% and argon occupies 0.9%. Gases like carbon dioxide, nitrous oxides, methane, and ozone are trace gases that account for about a tenth of one percent of the atmosphere.