dr. anand srinivasan. made of 2 kidneys 2 ureters urinary bladder urethra
TRANSCRIPT
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Dr. ANAND SRINIVASAN
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Made of 2 kidneys 2 ureters Urinary bladder Urethra
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Position Posterior abdominal
wall
Retroperitoneum
Extension T12 – L3
Right kidney lower than left due to liver on right side
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Bean shaped
Enclosed by “Renal fascia”
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Superiorly Right Adrenal Gland
Anteriorly Right lobe of liver Duodenum Hepatic flexure of colon
Posteriorly Diaphragm and posterior abdominal wall
muscles
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Superiorly Left Adrenal Gland
Anteriorly Stomach Spleen Pancreas Jejunum Splenic flexure of colon
Posteriorly Diaphragm and posterior abdominal wall
muscles
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Cortex
Medulla consisting of Pyramids Minor calyx Major calyx
Renal pelvis
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1. Renal pyramid
2. Interlobar artery
3. Renal artery4. Renal vein5. Renal hilum6. Renal pelvis7. Ureter8. Minor calyx9. Renal
capsule10. Inferior pole11. Superior pole12. Interlobar vein13. Nephron14.Renal sinus15.Major calyx16.Renal papilla17.Renal column
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ARTERIES Right & Left Renal Arteries from
Abdominal aorta
VEINS Right & Left Renal veins – draining into
Inferior vena cava Left Renal V. longer than right
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Tubes that convey urine from kidneys to urinary bladder
25 – 30 cm
Passes Behind periotenum Into pelvic cavity Passes obliquely through the posterior wall
of bladder – prevents reflux of urine
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Roughly pear shaped
Oval shaped when filled with urine
Posterior surface – Base
Urethra starts at neck
Peritoneum covers superior surface only
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Total capacity of bladder – 600 ml
Awareness to mictuirate – 300 – 400 ml
Trigone of bladder
Internal urethral sphincter – involuntary External urethral sphincter – voluntary
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Ross and Wilson Anatomy and Physiology – Chapter 13; Pages 336 - 344