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15 Cards in this Set

  • Front
  • Back
Nerve supply
Renal plexus of sympathetic division of A.N.S.
Autonomic regulation
Autonomic regulation
vasomotor regulation of arterioles alter diameter of arterioles thus blood flow through kidneys
Juxtaglomerular appartus
helps regulate blood pressure within the kidneys.
formed by macula densa and juxtaglomerular cells
Juxtaglomerular cells
Along side the macula densa, the wall of modified smooth muscle cells of afferernt and sometimes efferent arterioles is called ______ _____.
Macula densa
modified cells of distal portion of ascending limb of henle
columnar tubular cells in this region are crowded together
Juxtaglomerular appartus
Appartus that helps regulate blood pressure
Regulation of internal environment (homeostasis)
What is the function of a nephron?
Water and solute concentrations
Blood pH
Removal of toxins
What are the regulations of internal environment (homeostasis)?
Urine formation
Glomerular filtration
Tubular reabsorption
Tubular secretion
Glomerular filtration
first step of the urine production
water and most soluters in blood plasma move across the wall of glomerular calpillaries into the glomerulur capsule and then into the renal tubule
Tubular reabsorption
fluid flow into renal tubule and through the collecting duct, tubue cells reabsorb 99% of filtered water and useful solutes. Water and solutes return to the blood as it flow through the peritubular capillaries and basa recta.
Reabsorption
refers to the return of filtered water and solutes to the bloodstream
absorption
contrast to reabsorption
entry of new substances into the body, as occurs in the GI tract.
Tubular secretion
fluid flow along the tubule and through the collecting duct, the tubule and duct cells secrete other materials, such as wastes, drugs, and excess, ions, into the fluid.
removes substances from the blood.
Glomerular filtrate
The fluid produced when blood is filtered by the filtration membrane in the glomeruloi of the kidney.