Parts of Human Breathing System- Grade 5

System – the human body is like a factory that is made of many parts. These parts work in groups called system

The breathing system has both visible parts such as the nose, internal parts such as the trachea, lungs and diaphragm.

These parts work together to enable human being to breathe.

Functions of breathing system

1. Breathing – this is the mechanism of taking air and blowing out air.

2. Air blow from outside into the nose through nostril. The nose has tiny hairs that clean the air by trapping dusts. At the back of the nose these is membrane that produces mucus which makes the air moist, warm and clean.

3. The trachea is called windpipe, it receives air from the nose,it has C- shaped ring that keep it strong and open. The walls of the windpipe have mucus and tiny hairs that filter air and keep it clean. The trachea acts as a passage for air from the nose into the lungs

4. A human being has two lungs

Membrane that produces mucus, which makes the air moist, warm and clean.

1. The trachea is also called the windpipe. It receives air from the nose. It has C- shaped rings that keep it strong and open. The walls of the windpipe have mucus and tiny hairs that filter the air and keep it clean. The trachea acts as passage for air, from the nose into the lungs

2. A human being has two lungs located inside the chest. The lungs are a pair of airfilled organs. The lungs take in the oxygen in the air and take out carbon dioxide that the body does not need.

3. The diaphragm is located under the lungs. It controls breathing. It separates the chest from the abdomen. It helps to fill the lungs with air when breathing in. It also helps to take out air when breathing out.

4. Breathing is essential for the living process of human beings to continue.