Neuro Phys

Front 1

facilitated diffusin has a limited number of

Back 1

carrier proteins

Front 2

facilitated diffusion can be saturated, called

Back 2

transport maximum

Front 3

facilttated fifusin does not require

Back 3

energy

Front 4

facilitated requires what to move molecules

Back 4

c g

Front 5

facilotated moves molecules _____ their c g

Back 5

down

Front 6

in facilitated, molecule to be moved binds to the _______ on the ________ of the cell

Back 6

carrier pt, outside

Front 7

in facilitated, the molecule binds to carrier protein on the outside, then the carrier protein _______ an the molecule is now on the _____ of the cell

Back 7

changes shape, inside

Front 8

in facilitated, the molecule can be released from the

Back 8

carrier pt

Front 9

in facilitated, if the concentration on the inside is greater than the outside, the reverse happens and the molecule is transported ______ the cell

Back 9

outside

Front 10

example: transport of glucose and amino acids into muscles. insertion of carrier pt into the cell membrane is regulated by insulin

Back 10

reverse facilittated

Front 11

active transport can have a limited number of

Back 11

carrier pt

Front 12

in active transport, it can be sat. called

Back 12

transport max

Front 13

acitve transport requires

Back 13

energy

Front 14

acitve transport moves molecules _____ their c g

Back 14

against

Front 15

primary AT energy is derived from

Back 15

atp = adp + p04

Front 16

in primary AT, the carrier protein has what kind of enzyme activity

Back 16

atpase

Front 17

primary active trans works for what molecules

Back 17

na, k, ca, h, cl

Front 18

primary active transport occurs at what 2 location

Back 18

cell men, across intracellular mem

Front 19

co transport aka

Back 19

symport

Front 20

counter transport aka

Back 20

antiport

Front 21

molecules are moving in same direction

Back 21

co transport

Front 22

example: transport of na and glucose into the cell of digestive tract

Back 22

co transport

Front 23

molecules moved in opposite direction

Back 23

counter transport

Front 24

example: na and k pump

Back 24

counter transport

Front 25

3 binding sites for na are on the ____ of the cell

Back 25

inside

Front 26

2 binding sites for k are on the ____ of the cell

Back 26

outside

Front 27

with na and k pump, what kind of enzyme activity is on the inside of cell

Back 27

atpase

Front 28

the higher the na in the cell, the more na binds to the

Back 28

pumps

Front 29

the binding of 3 na to the inside of the cell activated

Back 29

atpase

Front 30

both na and k are moved against their

Back 30

c g

Front 31

the concentration of na in the extracellular fluid is

Back 31

142

Front 32

na inside the cell is what

Back 32

10

Front 33

overtime, enough na could move into the cell enough to cause

Back 33

lysis

Front 34

in a cell lacking ability to produce atp, it is

Back 34

isosmotic and hypotonic

Front 35

by pumping more positive charges out of the cell, na k pump _____polarizes the cell membrane making it more ____ on the ______

Back 35

hyper; negative inside

Front 36

in secondary active transport, energy is used to create a CG for ___ molecule by a ______ active pump

Back 36

one; primary

Front 37

2 separate transport proteins (an active pump and Na moving by facilitated diffusion) are involved in

Back 37

secondary active transport

Front 38

example: in the digestive tract

Back 38

secondary active transport

Front 39

counter and co transport can involve either

Back 39

primary or secondary active transport

Front 40

describes the equilibrium between CG and electromotive force for one ion

Back 40

nernest

Front 41

allows the calculation of the equilibrium for that ion = emf that would exactly balance the force of the CG. the calculation assumes that the membrane is fully permeable to just one ion.

Back 41

nernst

Front 42

can be used to calculate the actual electrical potential across the membrane at any moment in time, taking into consideration changes in membrane permeability to a number of ions

Back 42

GHK

Front 43

the membrane has leak channels, 100 times more permeable to

Back 43

k

Front 44

action potentials occur on ___ due to _____

Back 44

axons; voltage gated channels

Front 45

propagated along an axon membrane without a change in magnitude

Back 45

nondecremental

Front 46

local graded potentials occur on the _____ due to ____

Back 46

dendrites and cell bodies; ligand gated

Front 47

graded potentials are proportional in size to the

Back 47

strength of the stimulus

Front 48

local graded last longer than

Back 48

action potentials

Front 49

local graded last several milliseconds to hundreds of milliseconds due to the effects of

Back 49

second messenger molecules and phosphorylation of ion channels

Front 50

due to open na or ca channels. na or ça in membrane becomes closer to threshold potential (less negative) membrane is in an excited or facilitated state

Back 50

epsp

Front 51

due to open k channels. moves k out. or open cl channels, moves cl in. membrane potential is more negative - further from threshold. it will take stimulus stronger to generate an action potential

Back 51

ipsp

Front 52

generator potential on the soma will cause the axon membrane to reach

Back 52

threshold