Image: Wikimedia Commons

kidney

Internal organ of the excretory system in all vertebrates

Entityorgan type class of anatomical entityQ9377

Also known as vertebrate kidney

Instance of: organ type
, class of anatomical entity
Subclass of: urinary organ
, animal organ
Part of: urinary system
, endocrine system

Overview

From Wikipedia, the free encyclopedia · Read full article · Text CC BY-SA 4.0

The kidneys are a pair of organs of the excretory system in vertebrates, which maintain the balance of water and electrolytes in the body (osmoregulation), filter the blood, remove metabolic waste products, and, in many vertebrates, also produce hormones and maintain blood pressure. In healthy vertebrates, the kidneys maintain homeostasis of extracellular fluid in the body. When the blood is being filtered, the kidneys form urine, which consists of water and excess or unnecessary substances. The urine is then excreted from the body through other organs, which in vertebrates, depending on the species, may include the ureter, urinary bladder, cloaca, and urethra.

Overview

All data

82 statements · 23% with external sources · numbers in brackets are citations

Members / parts: nephron
Has part(s) of the class: renal segment
Different from: Nerka
human kidney
bud applies to name of object: почка
nephridium applies to name of object: "little kidneys"
2
Sources
1.Stated in Comparative renal anatomy of exotic species.
2.Stated in Effects of Three Pesticides on the Earthworm Lumbricus terrestris Gut Microbiota
View statement on Wikidata ↗
Development of anatomical structure: kidney development

On other databases

62 identifiers linking kidney across the web's reference databases

Data quality

statements

23%

externally sourced

Source last edited October 15, 2026. AIDB refreshes this page daily.

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AIDB. (2026). kidney (Q9377). Retrieved from https://aidb.si/e/kidney-Q9377