The membrane that covers the nucleus is called nuclear membrane or nuclear membrane. It is called the envelope, nucleolemma or karyotheca. The nuclear membrane is bilayered. Outer cover and inner cover. It is composed of phospholipids. The space between the two envelopes is called the perinuclear space. The distance between perinuclear spaces is 10-15 nm. Blisters originating from within the nuclear envelope are called nuclear blisters. The nuclear membrane contains nucleoplasmin. Nucleoplasmin mediates the exchange of various substances.
Function: The main function of the envelope is to separate the nucleoplasm, nucleolus and chromatin from the cytoplasm. Endoplasmic reticulum keeps the nucleus connected. Necessary materials transport from inside to outside and from outside to inside.