fong IV Flashcards
1
Q
what are epithelia?
A
polarized cell sheets separated by tight junctions
2
Q
what are the transport proteins
A
- pumps
- carriers (symporters, anitporters, etc)
- channels
3
Q
what are the transport processes?
A
- active (pumps)
- secondary active (coupled carriers)
- passive (channels, some carriers)
4
Q
what uses secondary active transport>
A
PT reabsorption of glucose
5
Q
this pump maintains low intracellular Na+and thereby facilitates the apical uptake of glucose
A
SGLT
6
Q
basolateral glucose moves passively via
A
GLUT
7
Q
what does the PT reabsorb?
A
HCO-/3
8
Q
CA inhibitors inhibit what process?
A
PT reabsorption of HCO-/3
9
Q
the proximal tubule effeciently recovers what?
A
- filtered amino acids
- oligopeptides
- low molecular weight proteins (LMPs)
10
Q
are PTs highly water permeable?
A
yes
11
Q
transport in the PT is
A
iso-osmotic
12
Q
should there be any pressure in the bowmans capsule in health?
A
no
