Nucleus (anatomy)

The nucleus is the control center of a cell, often considered its "brain." It is a small, spherical structure enclosed by a double membrane called the nuclear envelope. Inside, it contains genetic material—DNA—that carries instructions for the cell's functions and growth. The nucleus manages activities like gene expression, cell division, and protein production. It also contains the nucleolus, a region involved in assembling ribosomes, which are essential for protein synthesis. Overall, the nucleus ensures the cell operates correctly by storing and regulating genetic information vital for the organism's development and maintenance.