Vulvar and Vaginal Anatomy

The vagina is described as a flattened pocket shaped by the cervix rather than a simple tube or inside-out penis. The article says the clitoris can atrophy similarly to the penis and is larger and more internal than many people realize. The article corrects the distinction that the vulva is external and the vagina is internal. The article stresses that vulvar erectile tissue is distributed across the clitoris, labia, urethral sponge, perineal sponge, vestibule, and related structures. Pleasure from penetration is described as pressure into surrounding tissues rather than mere friction against the vaginal lining.