Question

To inhale ……… and to exhale ...….. is called respiration.

Answer 1

To inhale air/oxygen and to exhale air/ carbon dioxide is called respiration.

Answer 2

Oxygen, Carbon di oxide.

To inhale air/oxygen and to exhale carbon di oxide is called respiration.

Respiration:

• We can breathe thanks to our respiratory system and lungs. They expel carbon dioxide and inspire oxygen into our bodies, a process known as inspiration or inhalation (called expiration, or exhalation).

• The process of breathing involves the exchange of oxygen and carbon dioxide.
• The lungs, voice box, windpipe, nose, mouth, and throat are all parts of the respiratory system.
• Through the mouth or nose, air enters the respiratory system. The air gets warmed and humidified if it enters the nostrils (also known as the nares). The nasal passageways and other areas of the respiratory tract are shielded by tiny hairs known as cilia, which filter out dust and other particles that enter the nose through inhaled air.

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