Savais-tu que... Civilisations anciennes/Corps humain

Did you know that we have many muscles in our body? They are not all the same size. Lexie gives us some key facts about their composition and number.

The body temperature is a very important subject in the health field. Sometimes we feel hot, even too hot, especially when we have a fever. This shows that our body temperature fluctuates. Lexie explains this phenomenon to us.

Lexie shares facts about the human body. Every living being contains a certain amount of water. Do you know how much water we have in our bodies?

In this video, Lexie introduces us to the phenomenon of color perspective. Did you know that we can only see 3 colors?

Christopher explains that the Incas had factors that were responsible for transmitting messages across the empire through suspended bridges.

Christopher explains that the Incas were already doing surgeries more than 3000 years ago to try to heal the wounds of war.

Christopher explains that it was the Incas who cultivated the first potatoes.

Christopher explains that the Inca houses were built with cut stones to fit perfectly against each other; it was not necessary to put cement to hold them.

Josée explains that some Incas put bandages around the head of their baby so that their skull lengthens growing up.

Josée explains that the Incas had built more than 40,000 kilometers of roads and moved on foot or on the back of animals.

Josée explains that the Incas wrote very little: mail carriers had to memorize messages in order to deliver them.

Josée explains that the Machu Picchu is one of the only Aztec cities not to have been destroyed by the Spaniards: they did not find it because of its high altitude.

Josée explains that the Aztecs played soccer in their day: they found themselves on a ground where he had to pass a ball in a stone circle.

Josée explains that the Aztecs recognized the work of their warriors by creating a tattoo in their image after a war victory.

Josée explains that the Aztec population disappeared, among other reasons, due to smallpox, which had been brought to America by the Spanish.