Urinary system
Anatomical system consisting of the kidneys, ureters, urinary bladder, and the urethra / From Wikipedia, the free encyclopedia
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The human urinary system, also known as the urinary tract or renal system, consists of the kidneys, ureters, bladder, and the urethra. The purpose of the urinary system is to eliminate waste from the body, regulate blood volume and blood pressure, control levels of electrolytes and metabolites, and regulate blood pH. The urinary tract is the body's drainage system for the eventual removal of urine.[1] The kidneys have an extensive blood supply via the renal arteries which leave the kidneys via the renal vein. Each kidney consists of functional units called nephrons. Following filtration of blood and further processing, wastes (in the form of urine) exit the kidney via the ureters, tubes made of smooth muscle fibres that propel urine towards the urinary bladder, where it is stored and subsequently expelled through the urethra during urination. The female and male urinary system are very similar, differing only in the length of the urethra.[2]
Urinary system | |
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Details | |
Identifiers | |
Latin | systema urinarium |
MeSH | D014551 |
TA98 | A08.0.00.000 |
TA2 | 3357 |
FMA | 7159 |
Anatomical terminology |
800–2,000 milliliters (mL) of urine are normally produced every day in a healthy human. This amount varies according to fluid intake and kidney function.