integration zone

Dendrites

axon

terminals

Channels that opne and close depending on the state of the membrane

a channel that recquires a ligand to attach to it before it opens

allows specific ions into and out of the membrane. They are always open so recquire no energy to use.

protiens that latch onto molecules, changing their shape and transferring them from one side of the membrane to the other

K+ diffuses from the inside of the cell to the outside, causing the membrane to become more negative. The electrostatic forces are used to keep some K+ inside the cell

Na+ diplaces the K+

nothing happens

K+ diffuses from the outside to the inside of the cell. Making the membrane more positive

3Na+ ions are taken out of the cell and 2K+ ions are put into the cell

K+ flows into the cell and Na+ flows out

Na+ flows into the cell and K+ flows out

the membrane depolarises

proteins that capture molecules, change their shape and transfer them from one side of the membrane to another

channels that only open when a ligand binds to it

channels that are open/close depending on the state of the membrane

channels in the membrane that are always open