Chapter 43 Anatomy of the Urinary System

Chapter 43 Anatomy of the Urinary System - Chapter 43...

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Chapter 43 Anatomy of the Urinary System
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Functions of the kidney ¢ Excretory ¢ Keeps the electrolyte balance ¢ Keeps the acid-base balance ¢ Keeps the water balance
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Gross anatomy ¢ Kidney ¢ The right kidney is in a lower position than the left. ¢ Located at the superior lumbar region of the dorsal body wall ¢ Hilus l Renal artery, vein and ureter
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Figure 25.3
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Gross anatomy ¢ Capsules ¢ They hold the kidney in place and also protect them l Adipose capsule l Fibrous capsule
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Gross anatomy ¢ Cortex l Superficial kidney region immediate bellow the capsule l Light color ¢ Medulla l Darker color l Deep to the cortex
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Gross anatomy l Medullary pyramids Base Papilla or apex ¢ Renal columns l Cortical tissue between the pyramids ¢ Minor calyces ¢ Major calyces
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Gross anatomy ¢ Renal pelvis l Cavity formed by the joining of the major calyces and is continuous with the ureter ¢ Blood flow to the kidneys l Aorta l Renal arteries l Segmental arteries (5 branches) l Interlobar arteries
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Gross anatomy l Arcuate arteries l Interlobular arteries l Afferent arterioles Supply the nephron l Glomerulus (capillaries) l Efferent arterioles
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Gross anatomy ¢ Peritubular capillaries ¢ Interlobular veins ¢ Arcuate veins ¢ Interlobar veins ¢ Renal veins ¢ Inferior vena cava l There is no segmental veins
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Gross anatomy ¢ Ureters l Drain urine from the kidney to the bladder ¢ Bladder l Trigone 2 ureteral orifices 1 urethral orifice
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Gross anatomy l Detrusor muscle l Rugae ¢ Parietal peritoneum
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This note was uploaded on 01/06/2012 for the course BIOL 2402 taught by Professor Elainefanin during the Spring '11 term at Collins.

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Chapter 43 Anatomy of the Urinary System - Chapter 43...

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