Every cell has three parts, whether it be a blood cell, brain cell, or reproductive cell.
It contains a membrane with channels to let materials into and out of a cell. It contains cytoplasm, which can be basically defined as anything in between the membrane and the nucleus of a cell. And it contains the nucleus, which is the home of a cell's chromosomes, or genetic material. Cytoplasm is defined as the material that lies within the cytoplasmic membrane, or the membrane that surrounds a cell. It contains none of a cell's genetic material, because this is contained in the nucleus.