amniotic sac :)
the cell membrane
Vacuole!
cell wall
the membrane that surrounds the nucleus is the nuclear envelope. It has two layers, an inner and outter layer; each layer is made up of a phospolipid bilayer. There are small holes in the nucleur envelope called pores.
Cell Membraneorplasma membrane
the developing embryois surroudedby a protective membrane called the
Umbilical cords have two arteries and a vein inside them. These are surrounded by a material called Wharton's Jelly and a protective membrane known as the amnion.
the cell membrane
Cell membrane.
A cell is a tiny unit of living material surrounded by a thin membrane.
The nucleus does have a protective membrane called the nuclear membrane,
For plant cells, they have a cell membrane and covering the cell membrane is a cell wall. The cell wall is for the structure of the plant. For animal cells, they just have a cell membrane.
Vacuole!
A type of egg is composed of a protective shell and membranes that surround the developing embryo is an egg
parietal layer
No, each glomerulus, which is a cluster of capillaries is surrounded by a cup shaped membrane called the Bowman's Capsule.
This is also called the skin. It is the largest organ of the body and acts as a protective layer.