Structure of the cell membrane

The cell membrane is a thin sheet of fats or lipids, interspersed with large protein molecules.

The cell membrane regulates the flow of materials in and out of cells and maintains cellular integrity.

Cell membrane

Microvilli

These are small, finger or folds of the cell membrane itself.

The function of the microvilli is to increase the cell surface. This allows the cell to include more substances from their environment and effectively secrete molecules.

Types of cell junction

Tight and waterproof the junction

This is made up of protein molecules of cell membranes fuse neighbors.

Left proteins extend from the plates and through the space between cells.

Gap, or contact, node

Proteins pass through the two membranes of two adjacent cells.

Proteins are divided into groups (connexons), which is a hollow channel through the cell membranes to form.

Selective barrier

The cell membrane is a protective barrier that determines the substances travel in and out of the cell.

The cytoplasm

The cytoplasm (semi-liquid mixture), the cellular material outside the nucleus (control center) and in the cell (plasma) membrane. Prokaryotic cells (bacteria and primitive algae) have a cytoplasm and inclusions, but not organelles.

Larger molecules such as proteins, colloids form.

The inclusions are substances stored in the cytosol. The absorption depends on the cell type. In adipocytes (fat cells), lipids (fats) is a drop of integration. It consists of three types of protein structures: microtubules (small tubes), microfilaments (small fibers) and intermediate filaments.

Microfilaments

• microfilaments are thin strands of protein actin.

Microtubules

• Microtubules are hollow cylinders of the protein tubulin.

• Intermediate filaments are about 10 nm wide.