Human Respiratory System Grade 5 Science Worksheets

Basic Function

The respiratory system helps us breathe by bringing in oxygen and removing carbon dioxide, like how fresh air fills a balloon, and we release used air.

Organs Involved

Important parts include the lungs (like two sponges), the trachea (a tube), and the diaphragm (a muscle).

Breathing Process

It's like a see-saw. When you inhale (up), your diaphragm contracts, and your chest expands; when you exhale (down), your diaphragm relaxes.

Lung Structure

Inside your lungs, picture thousands of tiny balloons (alveoli) where oxygen meets blood and carbon dioxide gets carried away.

Diaphragm's Role

Think of your diaphragm as a superhero muscle. It flattens when you breathe in, making space for your lungs to expand.

Common Respiratory Issues

Sometimes, like a clogged straw, your airways can get blocked, causing issues such as asthma or bronchitis.

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