So that includes the mitochondria, which we'll discuss next. That includes the ribosomes, the goldie apparatus, the vesicles, our er, and everything else in between the cell membrane and the nucleus. Now, the cytosol is not exactly the cytoplasm. The cytosol is basically the cytoplasm minus all the structures and organelles. So if we take out all the organelles between the cell membrane and the nucleus, we are simply left with the fluid region. And the fluid is known as the cytosol.