Final answer:
The collecting ducts in the kidneys send the concentrated urine to the renal calyces, which then passes into the renal pelvis and further into the urinary bladder for storage and eventual excretion.
Step-by-step explanation:
The area at the collecting duct will eventually drain urine into the renal calyces.
The collecting ducts in the kidney are pivotal for concentrating urine and determining its final volume and composition. As urine passes through the ducts, water may be reabsorbed, influenced by antidiuretic hormone (ADH). These ducts merge and descend in the medulla to form terminal ducts, which empty at a papilla. The simple squamous epithelium lining of the collecting ducts has receptors for ADH and can insert aquaporin channel proteins into their membranes to reabsorb water. The concentrated urine then moves from the collecting ducts to the renal papillae, into the minor and major calyces, eventually reaching the renal pelvis. From there, it progresses through the ureter to the urinary bladder, where it is stored until excretion.