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  2. Ureter - Wikipedia

    en.wikipedia.org/wiki/Ureter

    The urinary tract including the ureters, as well as their function to drain urine from the kidneys, has been described by Galen in the second century AD. [31] The first to examine the ureter through an internal approach, called ureteroscopy, rather than surgery was Hampton Young in 1929. [30]

  3. Urinary system - Wikipedia

    en.wikipedia.org/wiki/Urinary_system

    This is an accepted version of this page This is the latest accepted revision, reviewed on 13 November 2024. This article is about the human urinary system. For urinary systems of other vertebrates, see Urinary systems of birds, urinary systems of reptiles, and urinary systems of amphibians. Anatomical system consisting of the kidneys, ureters, urinary bladder, and the urethra Urinary system 1 ...

  4. Bladder - Wikipedia

    en.wikipedia.org/wiki/Bladder

    In placental mammals, urine enters the bladder via the ureters and exits via the urethra during urination. [ 1 ] [ 2 ] In humans, the bladder is a distensible organ that sits on the pelvic floor . The typical adult human bladder will hold between 300 and 500 ml (10 and 17 fl oz ) before the urge to empty occurs, but can hold considerably more.

  5. Kidney - Wikipedia

    en.wikipedia.org/wiki/Kidney

    This becomes the ureter. At the hilum, the ureter and renal vein exit the kidney and the renal artery enters. Hilar fat and lymphatic tissue with lymph nodes surround these structures. The hilar fat is contiguous with a fat-filled cavity called the renal sinus. The renal sinus collectively contains the renal pelvis and calyces and separates ...

  6. Excretory system - Wikipedia

    en.wikipedia.org/wiki/Excretory_system

    The ureters are muscular ducts that propel urine from the kidneys to the urinary bladder. In the human adult, the ureters are usually 25–30 cm (10–12 in) long. In humans, the ureters arise from the renal pelvis on the medial aspect of each kidney before descending towards the bladder on the front of the psoas major muscle. The ureters cross ...

  7. Urethra - Wikipedia

    en.wikipedia.org/wiki/Urethra

    The urethra (pl.: urethras or urethrae) is the tube that connects the urinary bladder to the urinary meatus, [1] [2] through which placental mammals urinate and ejaculate. [3] In non-mammalian vertebrates, the urethra also transports semen but is separate from the urinary tract.

  8. Organ system - Wikipedia

    en.wikipedia.org/wiki/Organ_system

    kidneys, ureters, bladder and urethra: Integumentary system: exterior protection of body and thermal regulation: skin, hair, fat and nails: Skeletal system: structural support and protection, production of blood cells: bones, cartilage, ligaments and tendons: Muscular system: movement of body, production of heat: skeletal muscles, smooth ...

  9. Facet cell - Wikipedia

    en.wikipedia.org/wiki/Facet_cell

    Facet cells (also known as umbrella cells, [1] capping cells, superficial urotheliocytes) are a type of cells located in the renal pelvis, the ureters, and the urethra. Umbrella cells form the outermost layer of the urothelium, which is a special type of epithelium found in the renal pelvis, the ureters, and the urethra.