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23 Cards in this Set

  • Front
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Kidney
regulate the concentration of H20, salt and other dissolved substance in the blood through the formation and excretion of urine

made of many nephron
kidney is made of
cortex (outer)
medulla (middle)
pelvis (inner)
nephron is made of ??
bowman's capsule
excretory sys pathway
blood enters the kidney via the renal artery

afferent arterioles (in)

glomerulus

efferent arteriole

renal vein
structure of nephron
glomurus(filteration of large particles like blood cells and albumin"protein")

proximal convoluted tubule

desending limb

loop of henle

assending limb

collecting duct
reabsorption of glomerulus
Na Cl H2O and a.a vitamins and glucose
reabsorption of desending limb
H2O
reabsorption of asending limp
Na and Cl
reabsorptio nof loop of henle
Cl and Na

Urea goes in to get filtered again
reabsorption of distal convoluted tubule
H2O
reabsorption of collecting duct
H2O
urine is () to blood
hypertonic
desending and asending limb runs through
from cortex to pelvis
hormone that controls nephron
aldoeston
ADH (vasopressin)
aldoeston
from adrenal cortex에서분비

Na 양을 조절 (active reabsorption of Na)
ADH (vesopressin
ADH increase the permability of the collecting duct to water, allowing more water to be absorbed and more concentrated urine to be formed

water reabsorption (inc blood vol.)
other execretory organ
lung
skin
liver
lung
eliminate CO2 and H2O
Skin
eliminate H2O salt, and urea through sweat also lower body temperature
liver
process nitrogenous wastes

Urea is produced by deamination of a.a in the liver and diffuse into the blood for exretion in the kidney
protozoans and coelenterates
all cells are contact w/external aquous environment

Co2 and waste exit by simple diffusion thru cell membrane
Annelids (earthwarm)
CO2 excretion occur directly through the moist skin.

has mephridia in each body segment which excrete H2O and salt and N2 waste in form of urea
Arthopods (insects)
malpigian tubule which uric acid crystal is accumulated then move to intestine