Volts and amperage together basically combined in a formula to determine the number of watts, but they are not specifically related to each other. As per Ohm's law V=IR where V is voltage, I is current and R is resistance. since Voltages is equal to current times resistance than makes them directly proportional to each other and therefor related.
Cervical Position. During menstrual bleeding, the cervix is normally low and hard and slightly open to allow the blood to flow out. It feels like the tip of your nose. After your period stops, the cervix remains low and hard and the opening to the uterus (uterine os) remains closed.
External os (ostium uteri, external orifice of uterus) is the opening of the cervix into the vagina. It occupies a central position in the cervix and is round in the nulligravida and slit-like in the parous woman. Endocervix (cervical canal) is the cavity of the cervix and connects the external os with the internal os. It is fusiform in shape and has posterior and anterior oblique longitudinal ridges, the plicae palmatae. These are not exactly apposed but inter-lock like a zipper so that the canal is kept closed.