In humans, it is located "dorsally just outside the peritoneum  (pair-a-ta-NEE-um) between the level of the twelfth thoracic (tha-  RASS-ic) and third lumbar vertebrae." Most 
In humans, it is located "dorsally just outside the peritoneum  (pair-a-ta-NEE-um) between the level of the twelfth thoracic (tha-  RASS-ic) and third lumbar vertebrae." Most oxygen it consumes is  used to absorb +1 ions of sodium. For 10 points, name this non-  thinking organ with a sinus, a medulla, and a cortex.
In humans, it is located "dorsally just outside the peritoneum  (pair-a-ta-NEE-um) between the level of the twelfth thoracic (tha-  RASS-ic) and third lumbar vertebrae."
Kidney