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Urinary Anatomy

Functions of the Urinary System 1. Eliminate waste 2. Conserve needed substances 3. Regulate - BVl, BP, Plasma ions, Blood PH
Location of Kidneys Retroperitoneal Space Capped by adrenal glands Right Kidney slightly inferior
The HIlUM of a Kidney includes... Renal a & V Ureter Lymphatics Nerves
Layers of the Kidney 1. Renal Fascia 2. Peri-capsular fat 3. Renal capsule ALL COVERED BY PERITONIUM
Renal Lobe Renal cortex & Pyramids
Columns Dividing tissue between two adjacent pyramids
Functional Unit or the KIDNEY...the Parenchyma? NEPHRON
Glomerulus capillary network arising from an afferent arteriole
Bowman's Capsule/Glomeruluar capsule bilayered, cuplike encapsulating membrane surrounding each glomerulus
Renal CORPUSCLE glomerulus & capsule
Fluid Flow Corpuscle - tubule - PCT - Descending loop of Henle - Ascending loop of Henle- DCT - collecting tubule - papillary duct - minor calyx - major calyx - pelvis - ureter
Cortical Nephrons short supplied by peritubular capillaries majority
Juxtamedullary nephrons long 15% convluted tubules supplied by pertibular caps loop of henle supplied by vasa recta(parallel)
Efferent Artriole divides into.....when leaving the capsule 1. Peritubular branches/caps 2. Vasa Recta
peritubular branch & vasa recta join together to enter Cortical radiate venule - cortical radiate veins - arcuate veins - interlobar veins - segmental veins - renal vein - IVC
BLOOD FLOW Aorta - segmental a. - interlobar a. - arcuate a. - cortical radiate a. - afferent a. - glomerulus - efferent a - peritubular/vasa recta - venules - cortical radiate v - arcuate v - interlobar v - seg v - renal v - INFERIOR VENA CAVA.
Layers of Bowman's Capsule 1. Visceral - adhered to glomerulus (simp squam) modified into PODOCYTES 2. Parietal - outer layer (simp squam) Between - Capsular space where fluid accumulates.
Macula Densa Area of DCT where it makes contact with afferent arteriole
Juxtaglomerular Cells cells in afferent arteriole adj to macula densa
JUXTAGLOMERULAR APARATUS MACULA DENCA + JG CELLS SMOOTH MUSCLE ACTIVITY RESPONSE TO BLOOD PRESSURE
Created by: Yourdanos
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