Nuclear Membrane, a thin membrane, surrounds and protects the nucleus. It has a double membrane surrounding DNA and any other genetic element in a eukaryotic cell. It is also known as the nuclear envelope. Several pores are there on the nuclear envelope to aid and control the materials moving between the nucleus and cytoplasm. It keeps an eye on what goes in and what goes out of the membrane. The nuclear envelope might also play a role in the outlook of chromatin in the nucleus.