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Excretion condensed
Excretion condensed
16
Biology
Undergraduate 1
08/18/2010

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Term
excretion
Definition
removal of metabolic wastes
Term
excretion organs
Definition
kidneys, liver, lungs, skin
Term
3 regions of kidney
Definition
-cortex
-medulla
-pelvis
Term
Bowman's capsule
Definition
-horseshoe shaped bulb that embraces glomerulus
Term
glomerulus
Definition
bed of capillaries
Term
urine formation steps
Definition
filtration, secretion, reabsorption
Term
filtration
Definition
-blood pressure filters blood entering glomerulus through capillary walls into Bowman's capsule
-blood cells, plasma proteins too big
Term
secretion
Definition
-primary site distal convoluted tubule
-secretion of acids, bases, ions into filtrate
Term
reabsorption
Definition
-primary site proximal tubule
-reuptake of glucose, amino acids, salts, water by active transport
Term
descending limb
Definition
-water exits
Term
ascending limb
Definition
salt exits
Term
cortex
Definition
convoluted tubules and Bowman's capsule
Term
medulla
Definition
loop of Henle
Term
peritubular capillary
Definition
facilitates reabsorption and secretion
Term
aldosterone
Definition
-increases reabsorption of salt and water
-increases secretion of potassium
Term
ADH
Definition
increases collecting ducts permeability to water increasing water reabsorption
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