re·nal por·tal sys·tem
an arterial portal system, in which efferent glomerular arterioles receive blood from the capillaries of the renal glomeruli and carry it to the peritubular capillary plexus surrounding the proximal and distal convoluted tubules.
Synonym(s): hypothalamohypophysial portal system (2)
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Fig. 268 Renal portal system . The venous blood supply to the kidneys in (a) fish (renal portal system present), (b) mammals (renal portal system absent).
renal portal system
the system of veins in fish and amphibians taking blood from the region of the tail or hind limbs directly to the kidneys.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005