define mitosis
We already learned that mitosis is a type of cell division that produces more cells. This not only helps you grow, but also repairs damage when you do things like fall off your bike and scrape the skin from your knee. Any time your body needs to grow or repair, mitosis begins. The result is more of the exact same cells. So when you damage your skin cells, mitosis gives you more skin cells. When your liver needs to get bigger because you grew, your liver cells divide using mitosis to make more liver cells.