binds to kidney ureters and bladder to abdominal wall Perorenal fat adipose

Binds to kidney ureters and bladder to abdominal wall

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binds to kidney, ureters and bladder to abdominal wall Perorenal fat (adipose) capsulefatty middle layercushions kidneyFibrous (renal) capsulefibrous inner sacencloses kidney like cellophane wrap
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Renal ParenchymaRenal parenchyma - glandular tissue that forms urine2 ZonesCortex – outer 1 cmMedulla – pyramidsRenal sinus - cavity within the kidneycontains blood & lymphatic vessels, nerves, urine collecting ducts and fatRenal columns– extensions of cortex that project toward the renal sinusdivide medulla into renal (medullary) pyramids
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Renal StructuresRenal pyramids - 6 to 10 with broad base facing cortex and renal papilla facing sinusLobe- one pyramid and its overlying cortexMinor calyx - cup that nestles the papilla of each pyramid and collects its urineMajor calyces - formed by convergence of two or three minor calycesRenal pelvis - formed by convergence of two or three major calycesUreter - tubular continuation of the pelvis that drains the urine down to the urinary bladder
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Renal AnatomyFibrous capsuleRenal cortexRenal medullaRenal pelvisMajor calyxMinor calyxUreterRenal papillaRenal sinusRenal columnRenal pyramidRenal bloodvessels
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Fibrous capsuleRenal cortexRenal medullaRenal pelvisMajor calyxMinor calyxUreterRenal papillaRenal sinusRenal columnRenal pyramidAdipose tissuein renal sinusRenal bloodvesselsKidney Specimen
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Lobe of KidneyBroad side faces cortexPapilla (pointy end) faces the renal sinusNestled in the minor calyx
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Renal CirculationKidneys account for only 0.4% of body weight, but they receive about 21% of the cardiac output (renal fraction)Renal artery divides into segmental arteriesthat give rise to:- interlobar arteries- up renal columns, between pyramids - Arcuate arteries- over pyramids- cortical radiate arteries- up into cortex-Branch into afferent arterioles: each supplying one nephronLeads to a ball of capillaries – glomerulus
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Renal DrainageBlood is drained from the glomerulus by efferent arterioles-lead to peritubular capillaries -or vasa recta -cortical radiate veins -arcuate veins-interlobar veinsRenal veins empties into inferior vena cava
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Blood Supply DiagramRenalmedullaRenalcortexCortical radiateartery and veinInterlobarartery and veinSegmentalarteryArcuatearteryand veinRenalarteryandveinGlomerulusAortaRenal a.Segmental a.Interlobar a.Arcuate a.Cortical radiate a.Afferent arterioleInferior vena cavaRenal v.Interlobar v.Arcuate v.Vasa rectaCortical radiate v.Efferent arteriolePeritubular capillaries
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Renal CirculationCortexperitubular capillaries branch off of the efferent arterioles supply tissue near the glomerulus, the proximal and distal convoluted tubulesMedullaefferent arterioles give rise to the vasa recta supplying the nephron loop portion of the nephronMedullaCortexCortical radiateveinCortical radiatearteryEfferent arteriole
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