Cell Transport Flashcards
[type of cell transport]
high to low concentration; passive downhill
lipid soluble substances, gases, alcohol, steroid hormones
simple diffusion
[type of cell transport]
endocytosis of smaller substances
pinocytosis
[type of cell transport]
endocytosis of larger substances
phagocytosis
[type of cell transport]
this requires integral protein
carrier-mediated
[type of cell transport]
movement of water via aquaporins
osmosis, carrier-mediated
[type of cell transport]
movement of water from low concentration to high concentration
osmosis, carrier-mediated
[type of cell transport]
Uses Na from high [Na] to low [Na]
secondary active transport
[type of cell transport]
examples of this are NaGlu cotransport
NaCl pump
NaCa pump
NaH pump in PCT
secondary AT
[type of cell transport]
Na/K ATPase is an example of ___
primary active transport
[type of cell transport]
indirectly require ATP, source of energy is Na
Secondary AT
Increased oil
Decreased radius of solute
Decreased membrane thickness
results to ____ permeability (increased/decreased)
increased
____ two substances, same chemical composition, different shape
stereocpecificity
____ Gal and Glu competes with what transporter in SI
SGLT1
Cite the three properties of carrier-mediated transport
stereospecific
Saturation
Competition
[which is faster]
At low-solute concentration,
Simple diffusion or facilitated diffusion
Facilitated diffusion
[which is faster]
At high-solute concentration,
Simple diffusion or facilitated diffusion
simple diffusion
which exhibits transport maximum,
simple diffusion or facilitated diffusion?
facilitated diffusion
____ transporter for fructose from lumen to cell in SI
Glut 5
transporter of glucose in the neurons
Glut 3
transporter of glucose in BBB
glut 1
NaK ATPase contributes ___ mV of the RMP
-4mV out of the -70
This intercellular pump also contributes to BMR
NaK ATPase pump
NaK ATPase pump is ubiquitous. However, this is not seen in which part of the body
choroid plexus
Digoxin acts on this pump
NaK ATPase pump
___ is also called the proton pump
HK ATPase
HK ATPase is found in what cells of the stomach
parietal
___ pump also called SERCA
Ca-ATPase pump
HK ATPase, NaK ATPase, Ca ATPase are ___ type of active transporter
primary
This type of active transporter indirectly relies on NaK ATPase pump
secondary active tranport
[name the secondary active transporter]
Small intestine
SGLT 1
[uphill/downhill]
The direction of Na transport using secondary active transport
downhill
[name the secondary active transporter]
kidneys
SGLT 2
this transporter decreases the intracellular Ca in the cardiac membrane
Na-Ca exchange
The inhibition of Na-Ca pump leads to ____ cardiac contractility
(lesser, greater)
greater
in Na-Ca exchange in the heart,
which moves uphill (or going out of the cell)
Calcium
In NaK ATPase pump, which goes out of the cell?
Sodium
In NaK ATPase pump, which goes out of the cell?
Sodium
[increase/decrease]
Potassium level increases the risk and severity of digitalis toxicity
hypokalemia
[increase/decrease]
hyperpolarized cardiac membrane and ____ level of potassium increases risk of digitalis toxicity
decreased
transport calciumin the sarcoplasmic reticulum uses this pump
Ca-ATPase
