There are two things that we must consider here: the fact of the existence of the apertures (נקבים, nekavim) found in the face, and the use that the soul itself makes of them. The truth is that the apertures themselves are made by the soul. When the body of the embryo is being formed, the spirit (רוח, ruach) that builds it breaks through so as to form the aperture, whereas in the other limbs and body parts the spirit remains inside. Afterwards, sensory experience comes about through these apertures. However, this breaking through by the soul is not dependent on the senses themselves, for there are cases where a person has a given organ but not the associated sense. Furthermore, a person does not constantly hear, smell or speak even though these apertures are open.