Renal capsule

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Renal capsule
1: Parenchyma 2: Cortex 3: Medulla 4: Perirenal fat 5: Capsule 6: Ureter 7: Pelvis of kidney 8: Renal artery and Renal vein 9: Hilus 10: Calyx
Transverse section, showing the relations of the capsule of the kidney. (Labeled as "adipose capsule".)
Latin	capsula adiposa renis, capsula fibrosa renis
Gray's	subject #253 1220
Dorlands/Elsevier	c_07/12211754

The renal capsule is a tough fibrous layer surrounding the kidney and covered in a thick layer of perinephric adipose tissue. It provides some protection from trauma and damage.

The renal capsule relates to the other layers in the following manner (moving from innermost to outermost):

• renal medulla
• renal cortex
• renal capsule
• perinephric fat (or "perirenal fat")
• renal fascia
• paranephric fat (or "pararenal fat")
• peritoneum (anteriorly), and transversalis fascia (posteriorly)

Additional images

Frontal section through the kidney

External links

• Anatomy at PSU urogen/dissectkidney2
• Organology at UC Davis Urinary/mammal/cortex1/cortex3 - "Mammal, kidney cortex (LM, Medium)"
• Human anatomy at Dartmouth figures/chapter_29/29-5.HTM

v • d • e Urinary system - Kidney
Layers	Renal fascia • Renal capsule • Renal cortex  (Renal column) • Renal medulla (Renal sinus, Renal pyramids, medullary interstitium) • Renal lobe • Cortical lobule • Medullary ray • Nephron
Afferent circulation	Renal artery → Segmental arteries → Interlobar arteries → Arcuate arteries → Cortical radial arteries → Afferent arterioles → Renal corpuscle (Glomerulus, Bowman's capsule)
Renal tubule	Proximal tubule → Loop of Henle (Descending, Thin ascending, Thick ascending) → Distal convoluted tubule → Connecting tubule → Collecting ducts → Duct of Bellini → Renal papilla → Minor calyx → Major calyx → Renal pelvis → Ureter
Efferent circulation	Glomerulus → Efferent arterioles → Peritubular capillaries/Vasa recta → Arcuate vein → Interlobar veins → Renal vein
Juxtaglomerular apparatus	Macula densa • Juxtaglomerular cells • Extraglomerular mesangial cell
Filtration	Glomerular basement membrane • Podocyte • Filtration slits • Intraglomerular mesangial cell • Tubular fluid
Renal physiology	Acid base physiology • Fluid balance

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Acknowledgement and Attribution Regarding Sources of Content

Some of the initial content on this page may be incorporated in part from copyleft sources in the public domain including wikis such as Wikipedia and AskDrWiki. Drug information for patients came from the The National Library of Medicine. Infectious disease information may have come from the Centers for Disease Control (CDC). Differential Diagnoses are drawn from clinicians as well as an amalgamation of 3 sources: 1.The Disease Database; 2. Kahan, Scott, Smith, Ellen G. In A Page: Signs and Symptoms. Malden, Massachusetts: Blackwell Publishing, 2004:3; 3. Sailer, Christian, Wasner, Susanne. Differential Diagnosis Pocket. Hermosa Beach, CA: Borm Bruckmeir Publishing LLC, 2002:7 .