Prab: CSV import

2025-02-16T05:27:16Z

CSV import

← Older revision		Revision as of 05:27, 16 February 2025
Line 1:		Line 1:
	'''~~Peritubular~~ capillaries''' are tiny blood vessels~~, located in~~ the [[~~kidney~~]]~~, that function~~ in ~~the reabsorption of substances into the blood from~~ the [[~~renal tubules~~]]. ~~They~~ are part of the [[renal circulation]] and ~~are named for their location around (peri-)~~ the [[~~renal tubules~~]].		{{DISPLAYTITLE:Peritubular Capillaries}}

			==Peritubular Capillaries==
			[[File:Figure_41_03_03.png\|thumb\|right\|Diagram of the nephron showing peritubular capillaries.]]
			The '''peritubular capillaries''' are a network of tiny blood vessels that surround the [[renal tubule]]s in the [[kidney]]. These capillaries are part of the [[renal circulation]] and play a crucial role in the process of [[reabsorption]] and [[secretion]] during the formation of [[urine]].

	==Structure==		==Structure==
	~~Peritubular~~ capillaries arise from [[efferent arterioles]] ~~serving~~ the [[glomerulus]]. ~~They are low-pressure~~, ~~porous capillaries that reabsorb solutes~~ and ~~water from~~ the ~~tubular fluid (urine) in~~ the [[~~kidney~~]]~~. They are located in the~~ [[~~cortex~~]] ~~of the kidney~~, ~~and are continuous with the~~ [[~~venous system~~]] ~~via~~ the [[~~interlobular veins~~]].		The peritubular capillaries arise from the [[efferent arterioles]] of the [[glomerulus]]. After blood is filtered through the glomerulus, it exits via the efferent arteriole and enters the peritubular capillaries. These capillaries are closely associated with the [[proximal convoluted tubule]], [[loop of Henle]], [[distal convoluted tubule]], and the [[collecting duct]].

	==Function==		==Function==
	The primary function of the peritubular capillaries is to ~~reabsorb useful~~ substances ~~such as water and solutes from the renal tubules back into~~ the blood~~. This process is driven by~~ the [[~~concentration gradient~~]] ~~created by~~ the ~~filtration process in~~ the ~~glomerulus. The peritubular capillaries also carry away~~ the ~~substances that are not reabsorbed by~~ the ~~renal tubules~~.		The primary function of the peritubular capillaries is to facilitate the exchange of substances between the blood and the [[renal tubule]]s. This exchange is essential for the reabsorption of water, ions, and nutrients back into the bloodstream, as well as the secretion of waste products into the tubular fluid.

	==~~Clinical significance~~==		===Reabsorption===
	~~Damage to the peritubular capillaries can lead to reduced~~ reabsorption ~~of water and solutes~~, ~~which can result in conditions~~ such as [[~~proteinuria~~]] and [[~~chronic kidney disease~~]].		During reabsorption, substances such as [[glucose]], [[amino acids]], and [[sodium ions]] are transported from the tubular fluid back into the blood in the peritubular capillaries. This process is vital for maintaining the body's [[homeostasis]] and conserving essential nutrients.

	==~~See also~~==		===Secretion===
	* [[~~Renal physiology~~]]		In addition to reabsorption, the peritubular capillaries also play a role in the secretion of substances such as [[hydrogen ions]], [[potassium ions]], and certain drugs into the tubular fluid. This helps in regulating the body's [[acid-base balance]] and removing excess substances from the blood.
	* [[~~Renal corpuscle~~]]
	* [[Renal tubule]]
	* [[~~Renal circulation~~]]

	==~~References~~==		==Clinical Significance==
	~~<references />~~		The function of the peritubular capillaries is critical in various [[renal pathologies]]. For instance, in conditions such as [[chronic kidney disease]], the efficiency of reabsorption and secretion can be impaired, leading to imbalances in fluid and electrolyte levels.

	[[~~Category:Kidney~~]]		==Related pages==
	[[~~Category:Capillaries~~]]		* [[Nephron]]
	[[~~Category:~~Renal ~~physiology~~]]		* [[Glomerulus]]
			* [[Renal circulation]]
			* [[Urine formation]]

	~~{{stub}}~~		[[Category:Renal anatomy]]

Prab: CSV import

2024-02-25T16:48:54Z

CSV import

New page

'''Peritubular capillaries''' are tiny blood vessels, located in the [[kidney]], that function in the reabsorption of substances into the blood from the [[renal tubules]]. They are part of the [[renal circulation]] and are named for their location around (peri-) the [[renal tubules]].

==Structure==
Peritubular capillaries arise from [[efferent arterioles]] serving the [[glomerulus]]. They are low-pressure, porous capillaries that reabsorb solutes and water from the tubular fluid (urine) in the [[kidney]]. They are located in the [[cortex]] of the kidney, and are continuous with the [[venous system]] via the [[interlobular veins]].

==Function==
The primary function of the peritubular capillaries is to reabsorb useful substances such as water and solutes from the renal tubules back into the blood. This process is driven by the [[concentration gradient]] created by the filtration process in the glomerulus. The peritubular capillaries also carry away the substances that are not reabsorbed by the renal tubules.

==Clinical significance==
Damage to the peritubular capillaries can lead to reduced reabsorption of water and solutes, which can result in conditions such as [[proteinuria]] and [[chronic kidney disease]].

==See also==
* [[Renal physiology]]
* [[Renal corpuscle]]
* [[Renal tubule]]
* [[Renal circulation]]

==References==
<references />

[[Category:Kidney]]
[[Category:Capillaries]]
[[Category:Renal physiology]]

{{stub}}

Peritubular capillaries - Revision history

Prab: CSV import

Prab: CSV import