excretory system Flashcards
positive feedback
on —> until effect
ex) contractions will keep going until baby is born
negative feedback
on/off
ex) contracts will start and then stop; baby will never be born
kidney parts
renal artery going in
renal vein going out
renal cortex
nephrons
renal pelvis
renal medulla
ureter going out
kidney (nephron) function
filter blood by reabsorbing needed nutrients and producing urine with the leftovers
glomerulus
cluster of capillaries inside bowman’s capsule
bowman’s capsule
filter blood from glomerular capillaries
proximal tubule
first tubule that blood goes through; secretion/reabsorption
distal tubule
3rd tubule that blood goes through; secretion/reabsorption
loop of henle
2nd tubule that blood goes through; ONLY reabsorption
collecting tubule/duct
-no secretion/reabsorption
-no capillaries
collects urine (waste) from nephrons and moves it to renal pelvis and ureters
is the glomerulus/capillaries part of the nephron?
no; blood vessels are not part of the nephron
filtration
process occurring in nephrons in each kidney when blood, except blood cells and large proteins, diffuse from glomerulus into Bowman’s capsule
artery
“away” from heart; into organs
vein
“voy” a la corazón, away from organs
ureter
tube that transfers urine from kidney to urinary bladder