What types of epithelial tissue are found in the nephron?

The nephron possesses a simple epithelium lined by a single layer of cells which can generically be referred to as tubular epithelial cells.

What are the ducts of Bellini histology?

A region where a portion of the medulla project into the renal cortex are referred to as medullary ray. Large collecting tubules near the apex of the pyramid are the ducts of Bellini. The ducts of Bellini are also called a papillary ducts.

What type of epithelial tissue is the collecting duct of kidney?

simple cuboidal epithelium
The collecting ducts span the renal cortex and medulla and concentrate the urine. The collecting duct is composed of simple cuboidal epithelium.

Where do ducts of Bellini occur?

Papillary (collecting) ducts are anatomical structures of the kidneys, previously known as the ducts of Bellini. Papillary ducts represent the most distal portion of the collecting duct. They receive renal filtrate (precursor to urine) from several medullary collecting ducts and empty into a minor calyx.

How is the epithelium of a collecting duct lined?

The duct is lined by a layer of simple columnar epithelium resting on a thin basement membrane. The epithelium is composed primarily of principal cells and α-intercalated cells. The simple columnar epithelium of the collecting duct system transitions into urothelium near the junction of a papillary duct and a minor calyx.

How is the tubule lined with columnar epithelium?

While the collecting tubule is lined by simple cuboidal epithelium, the tubular epithelial cells grow progressively taller throughout the segment until those in the collecting duct form a simple columnar epithelium.

Which is part of the distal tubule forms a collecting duct?

The end of the distal tubule continues into the collecting tubule that in turn merges with several other collecting tubules, thus forming a collecting duct. The late distal tubule, collecting tubule, and collecting ducts form a unified functional segment referred to as the ” Distal Tubule and Collecting Duct”.

What are the diagnostic criteria for collecting duct carcinoma?

Collecting duct carcinoma should be considered a diagnosis of exclusion Frequently extends into renal cortex and/or pelvis Defined by presence of a distinct spindle cell component occupying at least one microscopic low-power field (×40) Nuclei lare, vesicular and highly pleomorphic with prominent nucleoli