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Pelvis and perineum
Anatomy of the female reproductive organs of the pelvis
Anatomy of the female urogenital triangle
Anatomy of the gastrointestinal organs of the pelvis and perineum
Anatomy of the male reproductive organs of the pelvis
Anatomy of the male urogenital triangle
Anatomy of the pelvic cavity
Anatomy of the pelvic girdle
Anatomy of the perineum
Anatomy of the urinary organs of the pelvis
Arteries and veins of the pelvis
Nerves and lymphatics of the pelvis
Anatomy clinical correlates: Female pelvis and perineum
Anatomy clinical correlates: Male pelvis and perineum
Anatomy is so much easier when we compartmentalize things! For this reason, the perineum, can be divided into two triangles, the anterior urogenital triangle and the posterior anal triangle.
The urogenital triangle can be further divided into a superficial pouch and a deep pouch by a layer of deep fascia called the perineal membrane. In females, the urogenital triangle houses the female external genitalia and the perineal muscles.
Let’s start with talking about the female external genitalia, also called the vulva, which includes the mons pubis, the paired labia majora, labia minora, and the clitoris. As well as deeper structures - the bulbs of the vestibule, the greater vestibular glands, and the lesser vestibular glands.
The mons pubis is a rounded, fatty eminence that lies anterior to the pubic symphysis, pubic tubercles, and superior pubic rami. This eminence has a coarse pubic hair that grows after puberty.
Now, from the mons pubis, two folds of skin called the labia majora arise and extend posteriorly towards the anus. These labia meet anteriorly to form the anterior commissure, and posteriorly to form the posterior commissure.
Also, the labia majora is the termination point of the round ligament of the uterus which is the embryonic remnant of the gubernaculum in females.
All right, now the labia majora lie on each side of a central depression called the pudendal cleft, which houses the labia minora and the vestibule of the vagina.
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