Information about Labioscrotal Folds
| Labioscrotal folds | ||
|---|---|---|
| Stages in the development of the external sexual organs in the male and female. | ||
| subject #252 1214 | ||
| Precursor | genital tubercle | |
| Gives rise to | Labia majora, Scrotum | |
| Dorlands/Elsevier | s_31/12775207 | |
- In the female, they become the posterior labial commissure. The sides of the genital tubercle grow backward as the genital swellings, which ultimately form the labia majora; the tubercle itself becomes the mons pubis. In contrast, the labia minora are formed by the urogenital folds [1]
- In the male, they become the scrotum.
References
External links
- "Development of Male External Genitalia", at mcgill.ca
- "Development of Female External Genitalia", at mcgill.ca
- Diagram at mhhe.com
- Swiss embryology (from UL, UB, and UF) ugenital/genitexterne01
- MedEd at Loyola urology/nlpendv.htm
Embryology is the study of the development of an embryo. An embryo is defined as any vertebrate in a stage before birth or hatching. Embryology refers to the development of the egg cell (zygote) after fertilization and the differentiation of cells into tissues and organs.
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A genital tubercle is a body of tissue present in the development of the urinary and reproductive organs. It forms in the ventral, caudal region of mammalian embryos of both sexes, and eventually develops into a phallus.
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The labia majora (singular: labium majus) are two prominent longitudinal cutaneous folds which extend downward and backward from the mons pubis to the perineum and form the lateral boundaries of the cleft of venus, which contains the labia minora, interlabial sulci,
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In some male mammals, the scrotum is a protuberance of skin and muscle containing the testicles. It is an extension of the abdomen, and is located between the penis and anus.
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Elsevier, the world's largest publisher of medical and scientific literature, forms part of the Reed Elsevier group. Based in Amsterdam, the company has substantial operations in the UK, USA and elsewhere.
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In sciences dealing with the anatomy of animals, precise anatomical terms of location are necessary for a variety of reasons. Non-scientists often wonder why zoological and human anatomists use complex terminology to describe locations on a body, when common terms like "up",
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A sex organ, or primary sexual characteristic, as narrowly defined, is any of those anatomical parts of the body which are involved in sexual reproduction and constitute the reproductive system in a complex organism; namely:
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Sexual differentiation is the process of development of the differences between males and females from an undifferentiated zygote (fertilized egg). As male and female individuals develop from zygotes into fetuses, into infants, children, adolescents, and eventually into adults, sex
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Labial commissures are junctions of the labia majora and labia minora, with one pair for the labia majora and one pair for the labia minora.
The anterior commisure of the labia majora is below the mons veneris. In the pictures, it is the upper commisure.
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The anterior commisure of the labia majora is below the mons veneris. In the pictures, it is the upper commisure.
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A genital tubercle is a body of tissue present in the development of the urinary and reproductive organs. It forms in the ventral, caudal region of mammalian embryos of both sexes, and eventually develops into a phallus.
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The labia majora (singular: labium majus) are two prominent longitudinal cutaneous folds which extend downward and backward from the mons pubis to the perineum and form the lateral boundaries of the cleft of venus, which contains the labia minora, interlabial sulci,
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In human anatomy or in mammals in general, the mons pubis (Latin, pubic mound), also known simply as the mons, is the soft mound of flesh present in both sexes just above the genitals, raised above the surrounding area due to a pad of fat lying just beneath it
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The labia minora (singular: labium minus) are two small longitudinal cutaneous folds, situated between the labia majora, and extending from the clitoris obliquely downward, lateralward, and backward for about 4 cm.
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The urogenital folds (or urogenital ridges, or urethral folds) are an embryological structure which give rise to a portion of the external genitalia.
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- In the female, the urogenital folds become the labia minora.
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In some male mammals, the scrotum is a protuberance of skin and muscle containing the testicles. It is an extension of the abdomen, and is located between the penis and anus.
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Embryology is the study of the development of an embryo. An embryo is defined as any vertebrate in a stage before birth or hatching. Embryology refers to the development of the egg cell (zygote) after fertilization and the differentiation of cells into tissues and organs.
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University of Lausanne (in French: Université de Lausanne) or UNIL in Lausanne, Switzerland was founded in 1537 as a school of theology, before being made a university in 1890. Today about 10,000 students and 2200 researchers study and work at the university.
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University of Bern is a university in the Swiss capital of Bern. It was founded in 1834. As one of the German-speaking universities in Switzerland its official name is Universität Bern, although it is frequently referred to in the French form, Université de Berne.
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University of Fribourg (French: Université de Fribourg; German: Universität Freiburg) is a university in the city of Fribourg, Switzerland.
It was founded in 1889 by local businessman Georges Python, although the origins of the university can be traced to
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It was founded in 1889 by local businessman Georges Python, although the origins of the university can be traced to
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Loyola University Chicago is a private co-educational religious-affiliated university established in Chicago in 1870 as Saint Ignatius College. It was founded by the Roman Catholic religious order of the Society of Jesus and bears the name of the Jesuit patron, Saint Ignatius of
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Henry Gray's Anatomy of the Human Body (or Gray's Anatomy as it has commonly been shortened) is an English-language human anatomy textbook widely regarded as a classic work on the subject.
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Prenatal development is the process in which an embryo or fetus (or foetus) gestates during pregnancy, from fertilization until birth. Often, the terms fetal development, foetal development, or embryology are used in a similar sense.
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Mammalian embryogenesis is the process of cell division and cellular differentiation during early prenatal development which leads to the development of a mammalian embryo.
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The development of the urinary and reproductive organs is a part of the prenatal development, and concerns the urinary system and sex organs. The latter is a part of the stages of sexual differentiation.
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The urinary system is the organ system that produces, stores, and eliminates urine. In humans it includes two kidneys, two ureters, the bladder, and the urethra. The analogous organ in invertebrates is the nephridium.
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The reproductive system is the ensembles and interactions of organs and/or substances within an organism that strictly pertain to reproduction. As an example, this would include in the case of female mammals, the hormone estrogen, ova, and the uterus and the vagina, and the breasts.
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The cloacal membrane is the membrane that covers the embryonic cloaca when still in the development of the urinary and reproductive organs.
It is formed by ectoderm and endoderm coming into contact with each other.
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It is formed by ectoderm and endoderm coming into contact with each other.
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The urogenital folds (or urogenital ridges, or urethral folds) are an embryological structure which give rise to a portion of the external genitalia.
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- In the female, the urogenital folds become the labia minora.
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