Genital tubercle - Wikipedia
WEBA genital tubercle, phallic tubercle, or clitorophallic structure is a body of tissue present in the development of the reproductive system of amniotes. It forms in the ventral, caudal region of mammalian embryos of both sexes, and …
Development of the Human Penis and Clitoris - PMC - National …
WEBThe human genital tubercle differentiates into a penis under the influence of androgens forming a tubular urethra that develops by canalization of the urethral plate to form a wide diamondshaped urethral groove (opening zipper) whose edges (urethral folds) fuse in the midline (closing zipper).
Development of the Reproductive System - Embryology
WEBJun 30, 2020 · The development of the external genitalia begins in the third week. Mesenchymal cells from the primitive streak migrate to the cloacal membrane to form a pair of cloacal folds. Cranially, these folds fuse to form the genital tubercle. Caudally, they divide into the urethral folds (anterior) and anal folds (posterior).
Embryology, Genitourinary - StatPearls - NCBI Bookshelf
WEBFeb 16, 2023 · The genital tubercle forms from a pile of mesenchymal cells from the cloacal folds and is positioned cranial to the opening of the urogenital sinus. The genital tubercle will elongate under the influence of androgens to become the phallus in males and the clitoris in females in the absence of androgens. [6]
Genital Tubercle - an overview | ScienceDirect Topics
WEBThe genital tubercle is a bi-potential structure which is the precursor of the penis in males and clitoris in females. Paired mesenchymal swellings called urogenital folds and labio-scrotal swellings form on either side of the cloacal membrane.
Development of the external genitalia: conserved and divergent ...
WEBMale and female external genitalia develop from the genital tubercle. The early tubercle has a superficial resemblance to the limb bud, but an important distinction is that the limb consists only of mesoderm and ectoderm, whereas the genital tubercle also has an endodermal component, the urethral epithelium.
Genital tubercle | human anatomy | Britannica
WEBgenital tubercle. human anatomy. Also known as: genital protrusion. Learn about this topic in these articles: development in embryonic life. In animal development: Reproductive organs. …from an outgrowth called the genital tubercle, located at the anterior edge of the urinogenital orifice.
Embryonic origin and compartmental organization of the external ...
WEBNov 5, 2014 · The genital tubercle is the precursor of the penis and the clitoris, although early development of the tubercle is similar in males and females. Sexual differentiation of the external...
Hormones and Growth of the Genital Tubercle | SpringerLink
WEBMay 22, 2022 · Policies and ethics. The genital tubercle (GT) appears during the fourth gestational week. The presence of Y chromosome and the number of X chromosomes seem to influence the development of the genital tubercle. The final appearance of the external genital at birth is due to interaction...
Embryology of the reproductive system | Kenhub
WEBAug 22, 2022 · In the absence of the fetal testes and their hormonal secretions, the genital tubercle does not lengthen and the urethral folds and the genital swellings do not fuse. Instead, the genital tubercle regresses and bends inferiorly to form the clitoris, whereas the phallic segment of the urogenital sinus forms the vestibule of the vagina.
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