Renal System Histology and Models
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Renal System Histology and Models
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Renal system in cat:
– Kidney– Ureter– Urinary bladder
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Kidney
Ureter
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Kidney
Ureter
Urinary bladder
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Ureters
Urinary Bladder
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Rugae inside urinary bladder that was cut open
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Adrenal gland
Kidney
Renal artery
Ureter
Urinary bladder
Spleen
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Adrenal gland
Kidney
Ureter
Urinary bladder
Prostate gland
Urethra
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vasa recta
peritubular capillaries
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vasa recta
peritubular capillaries
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Kidney Regions
• The kidney is divided into three REGIONS.
• If the question asks you to name the REGION, the answer is one of the below:– CORTEX– MEDULLA– RENAL PELVIS
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Cortex
Medulla
Renal Pelvis
REGIONS
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Kidney Structures
• If the question asks you to name the STRUCTURE, it is one of the below:
• Within the cortex, you will find the glomeruli and the
proximal and distal convoluted tubules.• Within the medulla you will find the loops of Henle,
collecting tubules, the pyramids and the columns (pale area between the pyramids).
• Within the renal pelvis you will find the hilus, which branches into the major calyxes, which branch into the minor calyxes.
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Pyramids
Hilus
Ureter
Major calyx
Minor calyx
On this model you need to know the regions, vessels, and the following structures:
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Hilus
Major calyx
Minor calyx
Ureter
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Renal artery
Segmental artery
Interlobar artery
Interlobular artery
Arcuate artery
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Interlobar artery
Interlobular artery
Arcuate artery
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CortexMedulla
Renal pelvis
REGIONS
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Pyramids
Major calyx
Minor calyx
Hilus
Ureter
STRUCTURES
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Interlobular artery Arcuate artery
Interlobar artery
Segmental artery
Renal artery
VESSELS
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KIDNEY MODEL
• Glomerulus • Proximal convoluted tubule• Descending loop of the nephron
– Thick segment– Thin segment
• Ascending loop of the nephron– Thick segment– Thin segment
• Distal convoluted tubule• Collecting tubule (where urine is most similar to the bladder)• Vasa recta
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Glomerulus
Vasa recta
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Distal convoluted tubule
Proximal convoluted tubule
Glomerulus
Descending loop of the Nephron
Ascending loop of the nephron
Collecting tubule (where the fluid is most similar to urine found in the bladder)
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Thick segment of the ascending loop of the nephron
Thick segment of the descending loop of the nephron
Thin segment of the ascending loop of the nephron
Thin segment of the descending loop of the nephron
Study Tip:To get oriented, always start at the glomerulus and run your finger down the proximal convoluted tubule. When it loops back up and thickens, you are now at the distal convoluted tubule.
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Efferent arteriole
Afferent arteriole
Glomerular capsule
The glomerular space is where urine is most dissimilar to the urine in the bladder
GLOMERULUS
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KIDNEY SLIDES
• Glomerulus• Kidney tubules (simple cuboidal epithelium)
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Glomerulus
Tubule
Skip
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Glomerulus
Tubule
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Glomerulus
TubuleKidney
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Pancreas: don’t get this confused with a glomerulus in the kidney!
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Pancreas Kidney