Therenal capsuleis a tough fibrous layer surrounding thekidneyand covered in a layer of perirenal fat known as theadipose capsule of kidney.The adipose capsule is sometimes included in the structure of the renal capsule. It provides some protection from trauma and damage. The renal capsule is surrounded by therenal fascia.Overlying the renal fascia and between this and thetransverse fasciais a region ofpararenal fat.[1]
| Renal capsule | |
|---|---|
 Thekidney capsulesurrounds both kidneys, and is labelled at the bottom right. | |
 Cross-section, showing the positioning of the kidney capsule | |
| Details | |
| Identifiers | |
| Latin | capsula fibrosa renis |
| FMA | 66610 |
| Anatomical terminology | |
The renal capsule resists stretching, limiting renal swelling, with important implications for renal circulation.[2]Stretching of the renal capsule due to swelling of the kidney causes flank pain.[3]
Structure
editThe renal capsule surrounds thefunctional tissueof the kidney, and is itself surrounded by a fatty adipose capsule, fascia, and fat. From the inner part of the kidney to outside the kidney, the positioning of the capsule is:
- renal medulla
- renal cortex
- renal capsule
- adipose capsule of kidney(or perirenal fat, or perinephric fat)
- renal fascia
- pararenal fat
- peritoneum(anteriorly), andtransverse fascia(posteriorly).
Sometimes the adipose capsule of the kidney also known as the perirenal fat, is regarded as a part of the renal capsule.[4]
See also
editReferences
edit- ^Squire L (2013).Fundamental neuroscience(4th ed.). Amsterdam: Elsevier/Academic Press. p. 315.ISBN978-0-12-385870-2.
- ^Davies, Andrew; Blakeley, Asa G. H.; Kidd, Cecil, eds. (2001).Human physiology.Edinburgh [u.a.]: Churchill Livingstone. p. 717.ISBN978-0-443-04559-2.
{{cite book}}:CS1 maint: location missing publisher (link) - ^"Flank Pain - Kidney and Urinary Tract Disorders".MSD Manual Consumer Version.Retrieved2024-02-29.
- ^ Favre G, Grangeon-Chapon C, Raffaelli C, François-Chalmin F, Iannelli A, Esnault V (2017-04-19)."Perirenal fat thickness measured with computed tomography is a reliable estimate of perirenal fat mass".PLOS ONE.12(4): e0175561.Bibcode:2017PLoSO..1275561F.doi:10.1371/journal.pone.0175561.PMC5396915.PMID28423008.
External links
edit- Anatomy image: urogen/dissectkidney2at Human Anatomy Lecture (Biology 129), Pennsylvania State University
- figures/chapter_29/29-5.HTM:Basic Human Anatomy at Dartmouth Medical School