Medical Terminology Chapter 7 Vocabulary

Medical Terminology Chapter 7 Vocabulary Medical Te Rminolgy
  
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erythropoietin (EPO)
 
A hormone secreted by the kidney to stimulate the production of red blood cells by bone marrow
Cortex
 
Outer region; the renal cortex is the outer region of the kidney
Calyx/Calix
 
Cup-like collecting region of the renal pelvis
Filtration
 
Passive process whereby some substances, but not all, pass through a filter or other material. In the kidney, blood pressure forces materials through the filter (glomerulus).
Glomerulus/Glomeruli
 
Tiny ball of capillaries (microscopic blood vessels) in cortex of kidney
Medulla
 
Inner region; the renal medulla is the inner region of the kidney
Micturition
 
Urination; the act of voiding
Nephron
 
Combination of glomerulus and renal tubule where filtration, reabsorption, and secretion take place in the kidney.
Nitrogenous Waste
 
Substance containing nitrogen and excreted in urine
Reabsorption
 
In this process, the renal tubules return materials necessary to the body back into the bloodstream
Renal Pelvis
 
Central collection region in the kidney
Renal Tubule
 
Microscopic tube in the kidney in which urine is formed after filtration.
Renin
 
An enzymatic hormone synthesized, stored and secreted by the kidney; it raises blood pressure by infuencing vasoconstriction (narrowing of blood vessels)
Urination
 
Process of expelling urine; also called micturition
Voiding
 
Emptying of urine from the urinary bladder; urination or micturition

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