The pituitary gland, I believe, but don't quote me on this.
Answer:
la le rechaza ace chuchu la lechuza la ase zhu ala aa anldbduevvla lechuaza
If you want to know how it looks outside of your body then that's when your fingers are wrinkled like if you soak your hands in water or take a long shower or bath that could be when water is entering your cells.
Hope this helps!