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The labia majora and labia minora are the external genitalia of the female reproductive tract. They are folds of skin that cover fat and smooth muscle. The labia minora are made up of skin, connective tissues, sebaceous glands, erectile muscle fibres, nerve endings, and blood vessels. The labia majora receive innervation from the anterior labial nerves.
| Characteristics | Values |
|---|---|
| Does the labia have muscles? | Yes |
| Type of muscle | Smooth muscle |
| Location of muscle | The labia are folds of skin that cover fat and smooth muscle |
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What You'll Learn
The labia majora and labia minora are made up of smooth muscle fibres
The labia majora also receives additional innervation from the anterior labial nerves (branches of the ilioinguinal nerve). The mons pubis also receives additional sensory innervation from the genitofemoral nerve. The labia majora are created using either a penile flap or a graft, and the amount of scrotal skin remaining after resection. Secondary corrections may be needed, such as symmetrization of the labia majora or a commisuroplasty with recreation of the anterior commissure covering the neoclitoris.
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The labia majora are innervated by the anterior labial nerves
The labia majora are two folds of thick skin that cover fat and smooth muscle. They are part of the external female genitalia, which also include the labia minora, clitoris, and vaginal opening. The labia majora are innervated by the anterior labial nerves, which are derived from the lumbar plexus. The anterior labial nerve arises from the ilioinguinal nerve as it exits the superficial inguinal ring. It passes inferiorly and anteriorly to reach the mons pubis and anterior of the labia. The anterior labial nerve transmits sensory information from the mons pubis, labia majora, root of the clitoris, and anterior aspect of the thigh, through the ilioinguinal nerve to the spinal cord.
The labia majora also receive additional innervation from the anterior labial nerves (branches of the ilioinguinal nerve). The mons pubis also receives additional sensory innervation from the genitofemoral nerve. The pudendal nerve provides innervation to the posterior labia majora and clitoris. The pudendal nerve bifurcates at the superficial transverse perineal muscle into the superficial and deep perineal nerves, which become the posterior labial nerve and the dorsal nerve of the clitoris, respectively.
The labia minora, which are located within the labia majora, are made up of skin, connective tissues, sebaceous glands, erectile muscle fibres, nerve endings, and blood vessels. They are exposed only when the labia majora are separated. In the upper part, the clitoris is enclosed by the labia minora in front and behind to form the prepuce and frenulum, respectively. The lower part of the labia minora fuses to the skin to form the fourchette, which is a fold of skin in the midline.
The creation of the labia majora is dependent on the use of either a penile flap or a graft, and the amount of scrotal skin remaining after resection. Secondary corrections may be needed, such as symmetrization of the labia majora or a commisuroplasty with recreation of the anterior commissure covering the neoclitoris.
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The labia minora are made up of nerve endings
The labia majora and labia minora are the external genitalia of the female reproductive tract. The labia majora are two folds of thick skin that cover fat and smooth muscle. The labia minora are found within the labia majora and are also made up of skin, connective tissue, sebaceous glands, erectile muscle fibres, nerve endings, and blood vessels. The labia minora are exposed only when the labia majora are separated. The clitoris is enclosed by the labia minora in front and behind to form the prepuce and frenulum, respectively. The labia minora’s lower part fuses to the skin to form the fourchette, a fold of skin in the midline. The clitoris is invested with numerous nerve endings so that it is highly sensitive to touch, pressure, and temperature. The clitoris has an exclusively sexual function to encourage the woman to engage in sexual intercourse and have babies as a consequence.
The labia minora are also important for sexual pleasure. When the labia minora are stimulated, it can lead to an increase in blood flow to the area, which can enhance sexual pleasure. The nerve endings in the labia minora are also connected to the brain, which is why sexual pleasure can be so intense. The brain releases chemicals during sexual pleasure that can lead to a sense of relaxation and well-being.
The labia minora are also important for urinary function. The nerve endings in the labia minora are connected to the urinary tract, which is why the urinary tract is so sensitive to touch and pressure. This sensitivity helps to prevent urinary incontinence and other urinary problems. The labia minora are also important for maintaining the pH balance of the urinary tract. The nerve endings in the labia minora help to regulate the production of urine and maintain the proper pH balance.
The labia minora are also important for childbirth. During childbirth, the labia minora help to stretch and open the vaginal canal, which allows the baby to pass through. The nerve endings in the labia minora also help to provide sensation and feedback to the brain during childbirth, which can help to make the process more comfortable and controlled.
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The labia minora are exposed when the labia majora are separated
The labia are folds of skin that cover fat and smooth muscle, meeting along the midline above the vaginal opening. The labia majora and labia minora are the two types of labia. The labia minora are two folds of thick skin, devoid of hair follicles, that are found on either side within the labia majora. They are made up of skin, connective tissues, sebaceous glands, erectile muscle fibres, nerve endings, and blood vessels.
The glans is covered by a clitoral hood formed in part by the fusion of the upper part of the two labia minora. The erectile tissue of the clitoral shaft consists of two parallel corpora cavernosa surrounded by a fibrous sheath (tunica albuginea). The clitoral cavernosal erectile tissue consists of smooth muscle and connective tissue.
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The labia majora are created using a penile flap or a graft
The creation of the labia majora is dependent on the use of either a penile flap or a graft, and the amount of scrotal skin remaining after resection. Secondary corrections may be needed, and a common secondary correction is symmetrization of the labia majora and sometimes a commisuroplasty with recreation of the anterior commissure covering the neoclitoris. The clitoris is invested with numerous nerve endings so that it is highly sensitive to touch, pressure, and temperature.
The clitoral hood and the labia minora can be constructed using a thin inner layer of penile foreskin, which is harvested in continuity with the glans flap. This is the only manner in which the very delicate features of the anterior commissure of the vulva, where the clitoris is located and where the labia minora start from the clitoral hood, can be reconstructed in a natural way. The labia minora are then sutured to the deepithelialized area of the neoclitoris. Thus, the neoclitoris is hooded with labia minora.
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Frequently asked questions
Yes, the labia minora contain erectile muscle fibres. The labia majora also contain muscle.
The labia are the external genitalia of the female reproductive tract. They are folds of skin that cover fat and smooth muscle.
The labia minora are made up of skin, connective tissues, sebaceous glands, erectile muscle fibres, nerve endings, and blood vessels. The labia majora are made of skin and fat.
The labia cover and protect the urinary and vaginal openings as well as the clitoris.
The labia minora are two folds of thick skin, devoid of hair follicles, that are present within the labia majora. They are exposed only when the labia majora are separated.
