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Definition of: kidney
Our photo definition of kidney 
(kid′nē) noun
1. Biol. One of a pair of bean-shaped glandular organs situated at the back of the abdominal cavity, close to the spinal column in man and other vertebrates. The kidneys serve in the excretion of waste products through a fine network of tubules to the ureters and thence to the bladder. ♦ Collateral adjective: renal.
2. Temperament. [Origin uncertain]
Longitudinal Section
p. Pyramids.
g. Papillae.
c. Cortical portion.
b. Bertin's columns.
u. Ureter.
d. Pelvis.
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