Using the image provided, identify and label the cortex, medulla, medullary pyramids, renal columns, and pelvis.

Verified step by step guidance

1. Step 1: Begin by identifying the outermost layer of the kidney in the image. This layer is called the cortex, which is responsible for filtration and contains structures like glomeruli and proximal/distal tubules. Label this region as 'Cortex'.
2. Step 2: Locate the inner region beneath the cortex. This area is known as the medulla, which contains the renal pyramids and is involved in concentrating urine. Label this region as 'Medulla'.
3. Step 3: Within the medulla, identify the triangular structures. These are the medullary pyramids, which contain collecting ducts that transport urine to the renal pelvis. Label these structures as 'Medullary Pyramids'.
4. Step 4: Look for the spaces between the medullary pyramids. These are the renal columns, which are extensions of the cortex and provide structural support. Label these areas as 'Renal Columns'.
5. Step 5: Finally, locate the central cavity-like structure where urine collects before moving to the ureter. This is the renal pelvis, which acts as a funnel for urine. Label this structure as 'Pelvis'.

Key Concepts

Cortex

The cortex is the outer layer of an organ, in this case, the kidney. It contains the renal corpuscles and the renal tubules, playing a crucial role in filtering blood and forming urine. The cortex is essential for the kidney's overall function, as it is where the initial stages of urine formation occur.

Medulla

The medulla is the inner region of the kidney, situated beneath the cortex. It consists of renal pyramids, which are cone-shaped structures that contain the loops of Henle and collecting ducts. The medulla is vital for concentrating urine and regulating water balance in the body.

Renal Pelvis

The renal pelvis is a funnel-shaped structure that collects urine from the renal calyces and channels it into the ureter. It serves as a reservoir for urine before it is transported to the bladder. Understanding the renal pelvis is important for comprehending the kidney's role in urine excretion.