Mitosis is a process of cell division. It is how non-reproductive or somatic cells divide. These somatic cells make up most of our body's organs and tissue, including muscles, gut, lungs, skin etc. In this type of cell division each daughter cells have the same chromosomes and DNA as that of parent cell.
Cells regulate their division by communicating with each other using chemical signals, which is important to for us to grow and so our cuts heal. Cell division must stop at the right time because if it continues it can lead to a disease called cancer. Some cells like brain cells and nerve cells divide often but cells like skin cells are constantly dividing to replace the skin cells we loose.
Yes, mitosis does indeed stop. There is a limited amount of times that cells can divide. For example, muscle and nerve cells. In fact, nerve cells stop at about the time we are born.
