N Norris – last revised 08/05/13 Biology 47 – Human Anatomy Biology 47 – Human Anatomy West Valley College - Norris Lecture Outline – Urinary System I. Definitions A. Interstitial Fluid B. Plasma C. Urine (waste) II. Function (= physiology) A. Regulation of Water Balance B. Elimination of Waste III. Gross Anatomy Of The Urinary System A. Kidneys B. Ureter C. Bladder D. Urethra IV. Gross Anatomy Of The Kidneys A. Renal Capsule B. Renal Cortex C. Renal Medulla 1. Pyramids 2. Renal Papilla 3. Renal Columns D. Renal Pelvis 1. Minor Calyx 2. Major Calyx E. Renal Sinuses V. VASCULAR SYSTEM A. Arteries Descending renal segmental interlobar arcuate interlobular afferent glomerulus aorta arteries arteries ateries arteries arteries arterioles capillaries B. Veins efferent peritubular interlobular arcuate interlobar renal inferior arteriole capillaries veins veins veins veins vena cavaN Norris – last revised 08/05/13 Biology 47 – Human Anatomy C. Renal Blood Flow Summary ARTERIES: VEINS: descending aorta --> inferior vena cava --> renal artery --> renal veins --> segmental artery --> segmental veins (not named) --> interlobar artery --> interlobar veins --> arcuate artery --> arcuate veins --> interlobular arteries --> interlobular veins --> afferent arterioles ---> renal ---> efferent arteriole --> peritubular capillaries corpuscle glomerular capillaries enclosed within Bowman’s capsule VI. Microscopic Anatomy A. Renal Corpuscle 1. Glomerulus 2. Bowman’s Capsule a. Visceral Epithelium b. Parietal Epithelium B. Renal Tubule 1. Proximal Convoluted Tubule (PCT) 2. Loop of Henle 3. Distal Convoluted Tubule (DCT) 4. Collecting Ducts 5. Juxtaglomerular Apparatus ("near" the glomerulus) a. Macula Densa b. Juxtaglomerular Cells (JG Cells) VII. Additional Key Terms excretion fenestrated filtration micturition natriuresis peritubular fluid podocytes reabsorption secretion transport maximum (Tm) vasa
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