What is renal lobule?
A cortical lobule (or renal lobule) is a part of a renal lobe. It consists of the nephrons grouped around a single medullary ray, and draining into a single collecting duct. Its near identical parallel is the rectal lobe, which is present in the majority of mammals.
Where is renal lobe located?
the kidney
renal lobe, region of the kidney consisting of the renal pyramid and the renal cortex.
What is the function of renal lobes?
Within a renal lobe, there are a number of intrarenal blood vessels. These are responsible for the transport of blood around the kidneys, and in particular the delivery of blood to the functional units of the kidneys — the nephrons.?
What structures define a kidney lobe?
The renal lobe is a portion of a kidney consisting of a renal pyramid and the renal cortex above it.
What is the function of medulla in kidney?
The main function of the medulla is to regulate concentration of the urine. The urine flows from the collecting ducts into the renal calyces and pelvis, which undergoes unidirectional peristaltic movements to allow drainage of the urine into the downstream ureter and bladder.
Where is the fibrous capsule of kidney?
renal capsule, thin membranous sheath that covers the outer surface of each kidney. The capsule is composed of tough fibres, chiefly collagen and elastin (fibrous proteins), that help to support the kidney mass and protect the vital tissue from injury.
What is the difference between renal artery and renal vein?
Renal Veins carry filtered blood from the kidneys to the posterior vena cava. Renal Arteries carry unfiltered blood from the aorta to the kidneys.
What are the 3 regions that make up a kidney?
The Kidneys Are Composed of Three Main Sections Each kidney consists of an outer renal cortex, an inner renal medulla, and a renal pelvis. Blood is filtered in the renal cortex. The renal medulla contains the renal pyramids, where urine formation takes place. Urine passes from the renal pyramids into the renal pelvis.
What is the function of column of Bertini?
The renal column (or Bertin column, or column of Bertin) is a medullary extension of the renal cortex in between the renal pyramids. It allows the cortex to be better anchored. Each column consists of lines of blood vessels and urinary tubes and a fibrous material.
How many lobes of kidney are there?
The kidney is composed of the cortex and the medulla. The medulla comprises 8–18 renal pyramids, or lobes, which contain radial striations caused by the straight part of the collecting ducts or uriniferous tubules and their accompanying blood vessels.
What structures that surround the kidney?
Each kidney is held in place by connective tissue, called renal fascia, and is surrounded by a thick layer of adipose tissue, called perirenal fat, which helps to protect it. A tough, fibrous, connective tissue renal capsule closely envelopes each kidney and provides support for the soft tissue that is inside.
What is meaning of renal medulla?
renal medulla. re·nal me·dul·la [ reen-l muh-duhl-uh ] Kidney. Definitions related to medulla of kidney: (kidney, medulla) The deepest division of the renal parenchyma, comprising the renal pyramids, which contain a dense network of nephrons, all of which are part of the blood filtration process.