Where is the area Cribrosa located?
Where is the area Cribrosa located?
The lamina cribrosa forms the bottom of the optic cup on the inner surface of the optic nerve head. On the outer surface of the optic nerve head, the posterior part of the lamina cribrosa faces the anterior region of the optic nerve.
What is the minor calyx made up of?
Minor calyx: Subdivision of a major calyx in the pelvis of the kidney. The minor calyx is an infolded tube forming a double-walled cup. The inner wall of the calyx fits over the papilla of a pyramid. The transitional epithelium of the minor calyx is continuous with the columnar epithelium of the papillary ducts.
What is the renal papilla?
Definition of renal papilla anatomy. : the apex of a renal pyramid which projects into the cavity of a calyx (see calyx sense 2) of the kidney and through which collecting ducts discharge urine.
What is Cribrosa in kidney?
The base and sides are surrounded by cortical tissue, and the apex protrudes into the renal calyces. These protrusions are called renal papillae, whose surface is perforated by openings of numerous papillary ducts (of Bellini) and is thus called the area cribrosa.
What causes morning glory in the eyes?
“Morning glory syndrome (MGS) is a birth (congenital) defect of the nerve of the eye (optic nerve) that resembles a flower known as “”morning glory””. It is characterized by an enlarged, funnel-shaped cavity of the optic disc, the point in the eye where the optic nerve fibers leave the retina.
What is major and minor calyx?
A minor calyx surrounds the renal papillae of each pyramid and collects urine from that pyramid. Several minor calyces converge to form a major calyx. From the major calyces, the urine flows into the renal pelvis; and from there, it flows into the ureter.
Where is the calyx?
In flowering plants (also called angiosperms), the part of the flower that surrounds the growing bud, often found at the base of the bloom, is called the calyx. The calyx is composed of one or more leaf-like structures called sepals.
Where is papillae located in kidney?
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.
How many renal papillae are there?
The average number of papillae per kidney was 12.87 +/- 3.09 (7 to 22); no differences by sex or laterality were found. The number of papillae was positively correlated with the number of minor calices (p < 0.01) and renal weight (p < 0.05). However, there was no correlation with the number of papillae and age.
What is the coronal section of the kidney?
To view the internal structures of the kidney, a coronal section can be applied. This type of cut will separate the front half of the structure from the back half. The inner area is called the medulla and is made of individual renal pyramids, which may not be distinct in small specimens.
