Collecting tubules and collecting ducts project through the ______ toward the ______.

• A. renal cortex; renal capsule
• B. renal capsule; renal cortex
• C. renal medulla; renal papilla
• D. renal pelvis; ureter

Answer: (C)

Verified step by step guidance

1. Step 1: Begin by understanding the anatomy of the kidney. The kidney is divided into two main regions: the renal cortex (outer layer) and the renal medulla (inner layer). The renal medulla contains structures such as the renal pyramids, which are important for urine formation and transport.
2. Step 2: Learn about the collecting tubules and collecting ducts. These structures are part of the nephron and are responsible for transporting urine from the nephron to larger ducts. They play a role in concentrating urine and are located within the renal medulla.
3. Step 3: Understand the renal papilla. The renal papilla is the tip of the renal pyramid where the collecting ducts converge. It serves as the exit point for urine from the renal medulla into the minor calyces, which eventually lead to the renal pelvis.
4. Step 4: Recognize the relationship between the collecting tubules/ducts and the renal medulla and renal papilla. The collecting tubules and ducts project through the renal medulla toward the renal papilla, facilitating the movement of urine.
5. Step 5: Based on this anatomical understanding, confirm that the correct answer is 'renal medulla; renal papilla,' as these are the structures involved in the pathway of urine transport within the kidney.