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Unit 4
Ch. 23 Urinary System
14
Anatomy
12th Grade
11/16/2010

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Term
kidney functions
Definition
regulate chemical compostion of body fluids, eliminates waste, controls compostition of bloods-ion levels, maintains, PCO2 and acid/ base balance, regulate BP by secreting renin
Term
kidney functions
Definition
contribute to metabolism -detoxify free radicals and drugs, gluconeogenesis, produce erythropoetin(red cell production), activation of vit.D(calcitrol)
Term
nitrogenous wastes
Definition
metabolic waste, 50% of N containing waste is urea, uric arid,creatine, BUN 10-20mg/dL, plasma creatine inc. above 1.5mg/dL
Term
Layers of tissue of kidney
Definition
renal fascia(outer layer of dense fibrous connective tisue that anchors the kidney to abdominal wall), adipose capsule(shock absorbing), renal capsule(fibrous cover that prevents kidney infection)
Term
Internal anatomy of layers
Definition
cortex-outer(cortical zone and juxtamedullary zone), medulla-renal pyramids(renal papillae-narrow ends, renal columns(between pyramids)
Term
urine flow
Definition
formed in nephrons->papillary ducts->minor calyx->major calyx->renal pelvis
Term
blood and nerve supply
Definition
renal arteries->segmental arteries->interlobar arteries->arcuate arteries->cortical radial arteries->afferent arterioles
Term
blood and nerve supply
Definition
efferent arterioles also form vasa recta with deep juxtamedulary nephrons
Term
blood and nerve supply
Definition
venules->cortical radial veins->arcuate veins->interlobar veins->segmental veins->renal veins->inferior vena cava
Term
the nephron
Definition
structural and functional units that form urine consists of: renal corpuscle(glomerulus and Bowman's capsule) renal tubule(PCT, loop of Henle,DCT)
Term
corpuscle
Definition
bowman's capsule- parietal layer, capsular space, visceral layer with epithelial podocytes
Term
corpuscle
Definition
func, pressure filtration of blood (water and small solute
Term
renal tubule
Definition
proximal covolutes tubule (PCT)
Term
renal tubule
Definition
loop of Henle (nephron loop) descending limb (thin), ascending limb(thick)
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