It is called the Rugae.
Rugae is a term used in anatomy to refer to a series of ridges produced by folding of the wall of an organ. For example the gastric rugae which allows for expansion of the stomach after the consumption of foods and drinks. The rugae of the vagina are the transverse ridges on the mucous membrane lining the vagina. They allow the vagina to stretch during childbirth.
Im pretty sure it’s depth sorry if I’m wrong...have a great day:>
779 million km exact number is 778,547,200 km.
Arents and children
diverse cultures
urban vs. rural life
people and nature