Peritubular capillaries

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Artery: Peritubular capillaries
Source	Efferent arteriole
Branches	Interlobular vein

In the renal system, peritubular capillaries are tiny blood vessels that travel alongside nephrons allowing reabsorption and secretion between blood and the inner lumen of the nephron.

Ions and minerals that need to be saved in the body are reabsorbed into the peritubular capillaries through active transport, secondary active transport, or transcytosis.

The ions that need to be excreted as waste are secreted from the capillaries into the nephron to be sent towards the bladder and out of the body.

The majority of exchange through the peritubular capillaries occurs because of chemical gradients, osmosis and Na⁺ pumps.

External links

BU Histology Learning System: 16016loa
Physiology at MCG 7/7ch03/7ch03p10 - "Renal Vasculature: Efferent Arterioles & Peritubular Capillaries"
Organology at UC Davis Urinary/mammal/vasc0/vasc4 - "Mammal, renal vasculature (EM, Low)"

Anatomy: urinary system (TA A08, TH H3.06, GA 11.1215)

Abdomen

Kidneys

Layers	Renal fascia Renal capsule Renal cortex Renal column Renal medulla Renal sinus Renal pyramids medullary interstitium Renal lobe Cortical lobule Medullary ray Nephron

Intrarenal arteries	Renal artery Segmental arteries Interlobar arteries Arcuate arteries Interlobular arteries Afferent arterioles

Renal tubule	Renal corpuscle Glomerulus Bowman's capsule Proximal tubule Loop of Henle Descending Thin ascending Thick ascending Distal convoluted tubule Connecting tubule Collecting ducts aka Duct of Belini Renal papilla Minor calyx Major calyx Renal pelvis

Intrarenal veins	Efferent arterioles Peritubular capillaries/Vasa recta Arcuate vein Interlobar veins Renal vein

JGA	Macula densa Juxtaglomerular cells Mesangium/Extraglomerular mesangial cell

Filtration	Glomerular basement membrane Podocyte Filtration slits Mesangium/Intraglomerular mesangial cell Tubular fluid

Ureters

Pelvis

Bladder	Apex Uvula Neck Median umbilical ligament Muscular layer Trigone Detrusor Mucosa Submucosa

Urethra	Urethral sphincters External sphincter muscle of male urethra External sphincter muscle of female urethra Internal sphincter muscle of urethra

M: URI

anat/phys/devp/cell

noco/acba/cong/tumr, sysi/epon, urte

proc/itvp, drug (G4B), blte, urte

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