Neuron Synapse

Neurotransmitters are released from the

• Dendrites

• Post-synaptic neuron

• Presynaptic neuron

• Schwann Cells

Excess neurotransmitters in the synapse that goes back into the presynaptic neuron.

• Resting potential
• Reuptake
• Retroactivity
• Repolarization

W

• Axon Terminal Button
• Neurotransmitters
• Dendrite
• Synapse

What generates a nerve impulse on the post-synaptic membrane? 

• Calcium binding with a receptor site
• Potassium leaking into the post-synaptic membrane 
• Neurotransmitter binding with receptor sites
• Neurotransmitter being removed from the synapse

The action potential arrives at the ____ and depolarizes the ____ membrane.

• Axon terminal, pre-synaptic

• Axon terminal, post synaptic

• pre-synaptic, axon terminal

• post synaptic, axon terminal

By what process do vesicles containing neurotransmitter leave the axon terminal?

• Exocytosis

• Endocytosis

• Diffusion

• Through gated channels

What is the response in the postsynaptic cell once the acetylcholine has bound to it?

• In opens the Na⁺ gated channels and Na+ rush in

• It opens the Ca²⁺ gated channels and Ca2+ rush in

• It closes the K⁺ channels creating a resting potential

• It releases its own neurotransmitter into the synaptic cleft

What happens in an axon terminal when an action potential arrives at the presynaptic membrane?

• sodium ions diffuse in

• sodium ions diffuse out

• calcium ions diffuse in

• calcium ions diffuse out

How does neurotransmitter cross the synaptic cleft?

• exocytosis

• simple diffusion

• carrier mediated transport

• osmosis

The blue nerve in the image represents a

• sensory neurone

• motor neurone

• relay neurone

Tags

NGSS.MS-LS1-3