The Breathing System

Key Notes :

What is the Breathing System?

• The breathing system, also called the respiratory system, is the group of organs that help us breathe in oxygen and breathe out carbon dioxide.

Main Parts of the Breathing System:

• Nose and Mouth: Air enters the body through the nose or mouth.

• Trachea (Windpipe): The air travels down the trachea to reach the lungs.

• Lungs: The main organs where the exchange of gases takes place.

• Diaphragm: A muscle under the lungs that helps with breathing.

How the Breathing System Works:

• Inhaling: When we breathe in, our lungs fill with air containing oxygen.
• Exhaling: When we breathe out, we release carbon dioxide from our lungs.
• The diaphragm moves down when we inhale and moves up when we exhale.

Importance of Oxygen:

• Oxygen is essential for our body to produce energy. Without oxygen, our cells cannot function properly.

Why We Need to Breathe:

• Breathing keeps us alive by supplying oxygen to the body and removing waste gases like carbon dioxide.

Keeping the Breathing System Healthy:

• Exercise regularly to strengthen the lungs.
• Avoid smoking and stay away from polluted air.
• Drink plenty of water to keep the lungs moist.
• Practice deep breathing exercises to improve lung function.

Fun Facts:

• Lungs are like sponges that can hold a large amount of air.
• Humans take around 12-20 breaths per minute when resting.
• The right lung is slightly bigger than the left lung.

Let’s practice!