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The renal medulla comprises the central and inner parts of the kidney's parenchyma where it contains about 8-12 cone-shaped structures known as the renal pyramids. The renal medulla contains the following structures: Nephron loops, also known as loops of Henle, which are U-shaped tubules extending into the renal pyramids and facilitate water ...
The renal papilla is the location where the renal pyramids in the medulla empty urine into the minor calyx in the kidney. Histologically it is marked by medullary collecting ducts converging to form a papillary duct to channel the fluid. Transitional epithelium begins to be seen.
The renal or kidney medulla is the inner part of the kidney. The medulla helps regulate the concentration of urine by filtering out water, salts, and acid.
The renal parenchyma can be divided into two main areas – the outer cortex and inner medulla. The cortex extends into the medulla, dividing it into triangular shapes – these are known as renal pyramids. The apex of a renal pyramid is called a renal papilla.
Renal medulla. The renal medulla is the inner part of your kidney. It contains most of the nephrons with their glomeruli and renal tubules. The renal tubules carry urine to the renal pelvis. Renal papilla. These pyramid-shaped structures transfer urine to the ureters.
The renal cortex, renal medulla, and renal pelvis are the three main internal regions found in a kidney. Nephrons, masses of tiny tubules, are largely located in the medulla and receive fluid from the blood vessels in the renal cortex. The renal cortex produces erythropotein.
The main unit of the medulla is the renal pyramid. There are 8-18 renal pyramids in each kidney, that on the coronal section look like triangles lined next to each other with their bases directed toward the cortex and apex to the hilum. The apex of the pyramid projects medially toward the renal sinus.
Renal corpuscles are located in the renal cortex, while their tubular systems extend into the medulla. Depending on their distribution and morphology, there are two main types of nephrons in the kidney; cortical and juxtamedullary. Cortical nephrons have their corpuscles close to the kidney capsule.
The renal medulla is situated within the inner part of the kidney and is important for maintaining the body’s balance by filtering waste materials and regulating fluid levels. Its primary components, the renal pyramids, aid in this process by filtering waste and producing concentrated urine while retaining necessary nutrients and fluids.
A frontal section through the kidney reveals an outer region called the renal cortex and an inner region called the renal medulla (Figure 25.1.2). In the medulla, 5-8 renal pyramids are separated by connective tissue renal columns. Each pyramid creates urine and terminates into a renal papilla.