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The genitourinary system, or urogenital system, are the sex organs of the reproductive system and the organs of the urinary system. [1] These are grouped together because of their proximity to each other, their common embryological origin and the use of common pathways. Because of this, the systems are sometimes imaged together. [2]
The development of the reproductive system is the part of embryonic growth that results in the sex organs and contributes to sexual differentiation. Due to its large overlap with development of the urinary system , the two systems are typically described together as the genitourinary system .
Henry Gray (1821–1865). Anatomy of the Human Body. 1918. 3. The Urogenital Apparatus; UNSW Embryology - Development of the Kidney and Reproduction Systems; How the Body Works / Sex Development / Sexual Differentiation / Duct Differentiation - The Hospital for Sick Children (GTA - Toronto, Ontario, Canada)
The pronephros is active in adult forms of some primitive fish and acts as the primary excretory system in amphibious larvae and embryonic forms of more advanced fish. [8] In mammals however, the pronephric tubules and the anterior portion of the pronephric duct degenerates in 3.5 weeks to be succeeded by the mesonephros, the embryonic kidney.
Anatomy figure: 41:06-04 at Human Anatomy Online, SUNY Downstate Medical Center - "Muscles of the female urogenital diaphragm (deep perineal pouch) and structures located inferior to it." v t
The urogenital triangle is the anterior part of the perineum. In female mammals , it contains the vulva , while in male mammals, it contains the penis and scrotum . Structure
A genital tubercle, phallic tubercle, or clitorophallic structure [2] is a body of tissue present in the development of the reproductive system of amniotes. [3] It forms in the ventral, caudal region of mammalian embryos of both sexes, and eventually develops into a primordial phallus.
The development of the internal and external reproductive organs is determined by hormones produced by certain fetal gonads (ovaries or testicles) and the cells' response to them. The initial appearance of the fetal genitalia looks female-like: a pair of urogenital folds with a small protuberance in the middle, and the urethra behind the ...