Synaptic Transmission

Action potentials causes...

• Sodium channels to open on the presynaptic neurone

• Calcium channels to open on the presynaptic neurone

• Potassium channels to open on the presynaptic neurone

• Calcium channels to open on the postsynaptic neurone

TRUE or FALSE? Vesicles are made of phospholipids

• True

• False

Which ion causes the vesicles to fuse with the membrane?

• Potassium ion

• Chloride ion

• Sodium ion

• Calcium ion

How do vesicles expel the neurotransmitters?

• Endocytosis

• Exocytosis

Which of these is NOT a neurotransmitter?

• Acetylcholine

• Dopamine

• Serotonin

• Acetylcholinesterase

Tags

NGSS.HS-LS1-6

The role of the neurotransmitter is to...

• Bind to receptor sites on sodium channels

• Bind to receptor sites on calcium channels

• Bind to receptor sites on potassium channels

• Bind to receptor sites on GABA channels

Once the neurotransmitter binds to the receptor, what enters the postsynaptic neurone?

• Calcium ions

• Potassium ions

• Sodium ions

• Chloride ions

The influx of sodium ions in the postsynaptic neurone causes...

• Hyperpolarisation

• Repolarisation

• Depolarisation

TRUE or False? Depolarisation of then postsynaptic neurone causes a new action potential to be generated

• True

• False

What is responsible for breaking down neurotransmitters?

• Enzymes
• Actin

• Myosin

• Bacteria