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15 Cards in this Set
- Front
- Back
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What are the 3 major functions of the urinary system?
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1. To rid the body of nitrogenous waste
2. Homeostasis of water (increase in water intake = increase urine output) 3. Homeostasis of solutes (things that dissolve in liquids) |
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What organs are involved in the urinary system?
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Kidneys, Ureters, Urniary Bladder, and Urethra
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List the external anatomy of the kidney.
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A. Renal capsule (membrane that surrounds)
B. Hilum (artery, vein, and ureter enter here) C. Adipose (prevent ptosis - cushions and holds in place) D. Renal fascia (cortex) |
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List the internal anatomy of the kidney.
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A. Renal Cortex
B. Renal Medulla 1. pyramids (point of pyramids = renal papilla) 2. columns (between pyramids - contain vessels) C. Renal Pelvis - forms collecting cup that picks up urine 1. major calyx (where each ninor calyx comes together) 2. minor calyx (cups that pick up urine around each renal papilla) |
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What is a nephron?
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Basic unit of the kidney (1.25 million/kidney)
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What is the main function of the nephron?
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to produce urine
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What is the nephron made up of?
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1. Renal Corpuscle
2. Renal Tubule 3. Collecting Duct |
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What makes up the renal corpuscle?
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a. Glomerulus (system of capillary networks - has afferent and efferent arterioles)
1. Fenestrations (little tiny holes - leaks) b. Glomerular Capsule i.e Bowman's Capsule (double layer with podocytes (slit pores - cells of visceral layer - foot cells) |
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What makes up the Renal Tubule?
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a. proximal convoluted tubule (cuboidal cells - microvilli)
b. nephron loop (descending limb = simple squamous - ascending limb = cuboidal and columnar) c. distal convoluted tubule (cuboidal cells w/microvilli) |
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Where does the main blood supply come from that carries blood into the kidneys?
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The renal artery
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What carries the blood away from the kidneys?
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The renal vein
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Trace a drop of blood through the kidneys starting with the renal artery ending with the renal vein.
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Renal artery --> interlobar artery --> arcuate artery --> interlobular artery --> afferent artery --> glomerulus --> efferent arteriole --> peritubular capillaries --> interlobular veins --> arcuate vein --> interlobar vein --> renal vein
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In the kidney, where is the interlobar arteries and veins found?
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between lobes/columns - in the medulla of the kidney
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In the kidney, where is the interlobular arteries and veins found?
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in the cortex of the kidney
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How much of the body's blood supply is filtered through the kidneys?
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about 1/4 (1200ml/min)
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