Renal pelvis
Encyclopedia
The renal pelvis or pyelum is the funnel-like dilated proximal part of the ureter
in the kidney
.
In humans, the renal pelvis is the point of convergence of two or three major calyces. Each renal papilla
is surrounded by a branch of the renal pelvis called a calyx
.
The major function of the renal pelvis is to act as a funnel for urine flowing to the ureter
.
The renal pelvis is the location of several kinds of kidney cancer
.
Its mucous membrane is covered with transitional epithelium
, and an underlying lamina propria of loose to dense connective tissue
.
Ureter
In human anatomy, the ureters are muscular tubes that propel urine from the kidneys to the urinary bladder. In the adult, the ureters are usually long and ~3-4 mm in diameter....
in the kidney
Kidney
The kidneys, organs with several functions, serve essential regulatory roles in most animals, including vertebrates and some invertebrates. They are essential in the urinary system and also serve homeostatic functions such as the regulation of electrolytes, maintenance of acid–base balance, and...
.
In humans, the renal pelvis is the point of convergence of two or three major calyces. Each renal papilla
Renal papilla
In the kidney, the renal papilla is the location where the medullary pyramids empty urine into the minor calyx. Histologically it is marked by medullary collecting ducts converging to form a duct of Bellini to channel the fluid. Transitional epithelium begins to be seen.-Role in disease:Some...
is surrounded by a branch of the renal pelvis called a calyx
Calyx (kidney)
Calyx may refer to:* Major calyx* Minor calyx...
.
The major function of the renal pelvis is to act as a funnel for urine flowing to the ureter
Ureter
In human anatomy, the ureters are muscular tubes that propel urine from the kidneys to the urinary bladder. In the adult, the ureters are usually long and ~3-4 mm in diameter....
.
The renal pelvis is the location of several kinds of kidney cancer
Kidney cancer
Kidney cancer is a type of cancer that starts in the cells in the kidney.The two most common types of kidney cancer are renal cell carcinoma and urothelial cell carcinoma of the renal pelvis...
.
Its mucous membrane is covered with transitional epithelium
Epithelium
Epithelium is one of the four basic types of animal tissue, along with connective tissue, muscle tissue and nervous tissue. Epithelial tissues line the cavities and surfaces of structures throughout the body, and also form many glands. Functions of epithelial cells include secretion, selective...
, and an underlying lamina propria of loose to dense connective tissue
Connective tissue
"Connective tissue" is a fibrous tissue. It is one of the four traditional classes of tissues . Connective Tissue is found throughout the body.In fact the whole framework of the skeleton and the different specialized connective tissues from the crown of the head to the toes determine the form of...
.