Dgmcbride Nerve

Another name for a nerve impulse is...

• Axon

• Action potential

• Axon potential

• Sodium potential

The role of dendrites is to...

• Insulate an axon

• Move potassium out of the neurone

• Receive a signal from another cell

• Pass on a signal to another cell

The resting potential is...

• The voltage across the cell membrane when the cell is not sending a signal

• The current across the cell membrane when the cell is not sending a signal

The main ions involved in action potentials are...

• Sodium

• Potassium

• Sodium and potassium

The resting potential is maintained by...

• Sodium gates

• Potassium gates

• Synapses

• The sodium/potassium pump

The first thing that happens when an action potential is sent is...

• Sodium gates close

• Potassium gates close

• Sodium gates open

• Potassium gates open

Sodium ions pass through the sodium gates (gated channels) by...

• Osmosis

• Facilitated diffusion

• Active transport

• Simple diffusion

Repolarisation of the nerve involves

• Opening potassium gates

• Opening sodium gates

Which number represents the resting potential

• 2

• 3

• 4

• 5

Which number represents depolarisation

• 2

• 3

• 4

• 5