Hyaloplasm, also known as cytosol, is the gel-like substance that fills the space between the cell membrane and the nucleus in an animal cell. It's essentially the fluid portion of the cytoplasm, making up about 70% of the cell's volume.

Here's what hyaloplasm does in an animal cell:

* Provides a medium for cellular processes: It acts as a solvent for enzymes, nutrients, and other molecules, allowing for chemical reactions to occur.

* Supports organelles: It acts as a medium for organelles to move around within the cell.

* Transports molecules: Hyaloplasm facilitates the transport of molecules throughout the cell, including nutrients, waste products, and signaling molecules.

* Maintains cell shape: While not as rigid as the cell wall in plant cells, hyaloplasm contributes to the cell's overall shape and structure.

* Plays a role in cell division: During cell division, the hyaloplasm participates in the separation of chromosomes and the formation of new cells.

In essence, hyaloplasm is the lifeblood of the cell, providing a dynamic environment for crucial cellular processes.