Each and every cell if our body has chromosomes. Read the following for more details.
We start our lives as a single cell which has the chromosomes of both our parents to make us.
And that single cell is formed as a result of fusion of two cells, one from each of our parents. Those cells contain half the number of chromosomes compared to other cells of the body, and this is because those cells are for a special purpose, to make you.
These chromosomes are present in each and every cell of our body. Their number is constant in each and every cell. So the chromosome number doesn't change in them.