Our bodies are made up of tiny things called cells. Cells are like tiny building blocks that come together to make us whole. Just like how lego pieces can come together to make a castle, our cells come together to make our bodies!

Cells are so small that you can’t even see them with your eyes, but they are the most important part of our bodies. They work together to help us stay healthy and do things we need to do every day.

Cells are different from each other, but they all work together to make tissues. Tissues are groups of cells that work together to do a specific job. For example, skin cells are a type of tissue that protects our body and helps us stay warm.

Organs are made up of different types of tissues working together to do a bigger job. Some organs you might know are your heart, lungs, and stomach. Your heart pumps blood to keep you alive, your lungs help you breathe, and your stomach helps you digest food.

Organ systems are groups of organs that work together to keep us alive. For example, the digestive system is made up of your mouth, throat, stomach, and intestines. They work together to help you eat food, break it down into small pieces, and get the nutrients you need from it.

Another example is the respiratory system, which is made up of your nose, throat, and lungs. It helps you breathe in air, get rid of bad air, and get the oxygen you need to live.

So, you see, our bodies are made up of tiny cells that come together to make organs and organ systems. These organs and systems work together to help us do important things like breathe, eat, and stay healthy. That’s why it’s so important to take care of our bodies and be healthy!