The clitoral body consists of two corpora cavernosa that become erect during arousal.Paired crura. The clitoral body branches off to form two appendages. These “legs” straddle the urethra and the vaginal canal and become enlarged with blood when you’re turned on.Vestibular bulbs. The vestibular bulbs form an upside-down heart shape, with the urethra and the vaginal canal at the heart’s cleavage. The bulbs reach through and behind the labia, around the vaginal canal, and toward the anus. They also swell when you’re hot and bothered.