What is the term for the region inside the plasma membrane that includes everything called?

The term that describes the region inside the plasma membrane, encompassing all the contents of the cell, is cytoplasm. This area includes the cytosol, a gel-like substance, as well as various organelles suspended within it, such as the nucleus, mitochondria, and ribosomes. The cytoplasm serves as the site for many cellular processes, such as metabolic pathways and the synthesis of proteins, allowing for the proper functioning and organization of the cell.

In contrast, the stroma refers specifically to the fluid-filled space inside chloroplasts in plant cells, rather than the overall cell. The intracellular space may suggest spaces within a cell but does not accurately represent the full scope of what the cytoplasm includes. The cellulosic area doesn’t have a defined meaning in cell biology terms and typically refers to the material composed of cellulose found in plant cell walls, not the internal environment of the cell.