The pericardium holds the heart in place and helps it work properly. The sac is made of two thin layers of tissue that enclose your heart. Between the two layers is a small amount of fluid. This fluid keeps the layers from rubbing against each other and causing friction.
Encloses cardiac space.
peritoneal
The nuclear membrane.
Nuclear membrane
The semipermeable membrane that encloses the cytoplasm of a cell...
The semipermeable membrane that encloses the cytoplasm of a cell...
The outer membrane encloses the mitochondria, acting as a barrier between the mitochondria and the rest of the cell. Additionally, the inner membrane inside the outer membrane further compartmentalizes and encloses the matrix where cellular respiration takes place.
nuclear envelope
Cell membrane
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.
nuclear membrane
te cell membrane