renal anatomy

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

Thank

you!!!