Labia major are two prominent, hair bearing folds of skin forming the lateral boundaries of the pudendal cleft. They extend downward and backward from the mons pubis to the perineum.
Each labium majus has two surfaces. The outer surface is pigmented and covered with strong, crisp hairs. The inner surface is smooth and beset with large sebaceous follicles.
The labia majora are thicker in front where they form the anterior commisure. Posteriorly, they are not really joined together. They appear to become lost in the neighboring integument. Together with the connecting skin, they form the posterior commisure.
The labia majora correspond to the scrotum in males. Within the labia, there are large amounts of adipose tissue and the terminal strands of the round ligament of uterus.
Blood supply of labia majora:
The labia majora are supplied by the deep external pudendal artery.
Nerve supply to labia majora:
Labia majora are innervated by the perineal branches of the posterior femoral cutaneous nerve.