Juxtamedullary nephron

A juxtamedullary nephron is a type of nephron, found only in birds and mammals. Medullary refers to the renal medulla, while the juxta (Latin: near) refers to the relative position of the renal corpuscle, which in these nephrons are near the medulla (but still in cortex. junction) . In other words, a juxtamedullary nephron is one where the renal corpuscle is close to the medulla, and the proximal convoluted tubule and its associated loop of Henle occur at a deep position compared to most other nephrons.