renal anatomy
DESCRIPTION
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RENAL ANATOMY
Bean shaped Weight Females 135gMales 150gPoles,
surfaces, borders & hilum
LOCATION AND LONG AXIS
Surface markingMorris parellelogram2 horizontal lines-T11 & L3 spine2 vertical lines- 2.5 & 9cm from median plane
Hilum 5cm from median plane,near the level of transpyloric plane,Little above it in the leftLittle below it in the right
RELATIONSUPPER POLE –
Suprarenal glandLOWER POLE -2.5cm
above iliac crestMEDIAL BORDER Above hilum –adrenal
glandBelow hilum - ureter
POSTERIOR
POSTERIOR
ANTERIOR
LATERAL BORDERRIGHT-Right lobe of liverHepatic flexure of colon
LEFTSpleenDescending colon
CAPSULES/COVERINGS
Fibrous capsulePerirenal/perinephric fatRenal fasciaFascia of GerotaAnterior – fascia of ToldtPosterior – fascia of ZucherkandlPararenal/paranephric fat
STRUCTURE
CORTEX
MEDULLA
SINUSES
• ARCHES/LOBULES• RENAL COLUMNS
• RENAL PYRAMIDS
• Br OF RA• Tributary of RV• RENAL PELVIS
HISTOLOGY•C
orpusels
•Tubules
Secretory part
•Ducts of bertini
Collecting tubule
•Macula densa
•JG cells
•Mesangial cells
Juxtaglomerular apparatus
NEPHRON,THE FUNCTIONAL UNIT OF KIDNEY
NORMAL KIDNEY
BLOOD SUPPLY
Renal arteryAccessory renal artery
End arterial supplyRenal portal system
Arterial supply
Arterial supply
PORTAL CIRCUL-ATION
Venous drainageStarts from peritubular capillary plexusRenal vein drains to IVC
Medullary circulationFastCounter current systems
Venous drainage
LYMPHATIC DRAINAGE
Lateral aortic nodes located at the origin of renal arteries
NERVE SUPPLYRenal plexus from
coeliac plexusSympathetics – T10-
L1Afferents – T10 – T12
DEVELOPMENTMetanephros- nephron
Ureteric bud of mesonephric duct- collecting duct & renal papillae.Initally sacralAscends to lumbar regionInitially lobulated
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you!!!