THE RENAL . HILUM HAS 1) ureter 2) arteria renalis 3) vena renalis 4) pelvis renalis

The correct answer is 1) ureter.<br /><br />The renal hilum is the concave part of the kidney where the renal vessels and ureter enter and exit. The ureter is the tube that carries urine from the kidney to the bladder. The other options, arteria renalis (renal artery), vena renalis (renal vein), and pelvis renalis (renal pelvis), are also structures associated with the kidney but are not specifically part of the renal hilum.