A2- nerve and coordination Flashcards
1
Q
(explain the increase in sodium ions)
A
ion channels proeteins open: so sodium ions diffuse in axon
making inside of axon positive/depolarisation/reaches threshold
more channels open
2
Q
explain how a resting potential is maintained in a neurone
A
neurone membrane is less permeable to sodium than potassium (ions)
sodium ions are actively transported out
by sodium ion carrier
3 sodium ions out for 2 potassium ions in
(must mention sodium in context of ions)
3
Q
A
