When you become aroused, the entire clitoris swells because it is made of erectile tissue, much like a penis. (mindbodygreen.com)
While Viagra wasn't as effective in treating cardiovascular diseases as researchers had hoped, it was exceptionally potent at doing something else: opening up the arteries in the penis and flooding erectile tissue with blood. (entrepreneur.com)
Frankenschlongs Penises with transplanted erectile tissue, created in rabbits by researchers at Wake Forest University Baptist Medical Center in Winston - Salem, North Carolina. (sciencemag.org)