Segmental Functional Transport Flashcards
reabsorbs the bulk (60%) of glomerular filtrate; secretes some solutes
PCT
water impermeable, but takes out NaCl
thick ascending loop of henle and DCT
this has microvilli, mitochondria, and tight junctions
PCT
thin loop of henle has what epithelium
squamous
we are roughly ____% water
60%
_____function in kidney is essential
reabsorption
our kidneys filter ____ L/d
180
GFR x Px (concentration of x in plasma)
filtered load
why do we see glucose in urine
transporters reach their maximum number and kidneys no longer able to reabsorb glucose
used to determine RPF and RBF in system
PAH
freely filtered and secreted
PAH
also has maximum number of transporters and will have amount secreted being constant when this happens
PAH
how much of substance X was cleared from plasma over time
clearance
can’t cross over membrane and remains in urine (happens at alkaline pH)
ionic form of weak acid
can go into blood to be reabsorbed (happens at acidic pH)
non ionic form of weak acid
primary driver of primary active transporters especially in PCT
Na+
osmolarity increases down this and water is removed while NaCl is kept in
thin descending loop of henle
osmolarity decreases up this and NaCl is removed
thick ascending loop of henle
puts NaCl into blood and has low osmolarity
DCT
fine tunes composition of urine (ADH acts on this too)
late distal tubule/CD
involves isotonic process with same osmolarity
PCT
has active and passive reabsorption
PCT
has passive diffusion
thin limb of loop of henle
has active transport of NaCl out
thick ascending loop of henle
has active transport of NaCl out
DCT