part of part of continuous with continuous with cortex of kidney glomerular capsule nephron tubule descending limb of loop of Henle proximal tubule kidney proximal tubule renal proximal tubule MA:0002611 UBERON:0004134 MESH:D007687 In mammals, the proximal tubule is a nephron tubule that connects Bowman's capsule to the loop of Henle. It has a brush border epithelial morphology[GO]. proximal kidney tubule CALOHA:TS-0509 EMAPA:28281 BTO:0001498 renal cortex tubule