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A&P.ch26.urinary

QuestionAnswer
urinary system primarily kidneys;although skin, liver, lungs & intestines eliminate some waste products
functions of urinary system (6) excretion 2. regulation of blood volume & pressure 3. regulation of concentration of solutes in the blood 4. regulation of pH of extracellular fluid 5. regulation of red blood cell synthesis 6. vitamin D synthesis
excretion kidneys filter blood & then excrete urine
regulation of blood volume & pressure kidneys controll extracellular fluid volume in the body by producing weak or concentrated urine
regulation of concentration of solutes in the blood kidneys help regulate concentration of major ions such as Na+, CL-, K+, Ca2+, HCO-3 & HPO4-2
regulation of pH of extracellular fluid kidneys secrete variable amounts of H+ to help regulate the extracellular fluid pH
regulation of red blood cell synthesis kidneys secrete a hormone, erythropoietin, which regulates the synthesis of red blood cells in bone marrow
Vitamin D synthesis kidneys control level of Ca2+ by regulating the synthesis of Vitamin D
renal capsule layer of fibrous connective tissue, surrounds each kidney
perirenal fat a dense layer of adipose tissue, engulfs the renal capsule
see word document jjj
capsule pressure Bowman's capsule - fills with fluid - has a pressure of 10 mm Hg
blood Colloid Osmotic Pressure (BCOP) Plasma proteins do NOT go into the lumina of Bowman's capsule; they stay in the blood and produce an osmotic force of 30 mm Hg
glomerular nephritis if proteins do get into the lumen of Bowman's capsule, the osmotic pressure increases; causing nephritis - greater pressure
Created by: walterina4327
 

 



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