place something in an envelope together with a letter
The cell wall encloses plant cells.
Encloses cardiac space.
peritoneal
encloses the nucleus
Cheese.
skull
Follicle.
the midbrain
The structure that encloses the nucleus is called the nuclear envelope, which is a double membrane layer that separates the nucleus from the cytoplasm. It contains pores that allow for the exchange of materials between the nucleus and cytoplasm.
The fibrous sac of tissue that encloses the heart is the pericardium. It provides protection for the heart.
peritoneal
rib cage