part of part of develops from renal glomerulus pronephros pronephric glomerulus UBERON:0004739 SCTID:360548001 pronephric glomus UBERON:0004191 ZFA:0001557 TAO:0001557 VHOG:0001237 glomera pronephric glomera glomus XAO:0000318 corpuscle AAO:0011049 The glomus forms from the splanchnic intermediate mesoderm and is the vascularized filtration unit, filtering the blood before it enters the tubules. The glomus is external to the nephron and extends over more than one body segment. glomerulus of pronephros pronephric glomeruli glomeral mesenchyme