Understanding Synaptic Transmission

What is the primary function of synaptic transmission?

• To transmit signals within a single neuron

• To send messages from one cell to another across a synapse

• To generate electrical impulses in muscle cells

• To store neurotransmitters in vesicles

Which of the following proteins is involved in the action potential process?

• Voltage-gated calcium channel

• Acetylcholinesterase

• Ligand-gated sodium channel

• Voltage-gated sodium transport protein

What triggers the opening of voltage-gated calcium channels?

• Binding of acetylcholine

• Change in voltage

• Presence of sodium ions

• Release of neurotransmitters

What is the role of synaptic vesicles in synaptic transmission?

• To release neurotransmitters into the synapse

• To store calcium ions

• To break down acetylcholine

• To transport sodium ions

What process describes the release of neurotransmitters into the synapse?

• Exocytosis

• Endocytosis

• Diffusion

• Osmosis

Which molecule binds to ligand-gated sodium channels to open them?

• Chloride

• Potassium

• Acetylcholine

• Calcium

What enzyme is responsible for breaking down acetylcholine in the synapse?

• Phospholipase

• Acetylcholinesterase

• Sodium-potassium pump

• Calcium ATPase

What happens to the voltage-gated sodium channels when the voltage changes in the post-synaptic cell?

• They bind to acetylcholine

• They close permanently

• They release calcium ions

• They open temporarily

What is the result of sodium ions flowing into the post-synaptic cell?

• The cell becomes hyperpolarized

• The cell becomes depolarized

• The cell releases neurotransmitters

• The cell undergoes apoptosis

What initiates another action potential in the post-synaptic cell?

• The breakdown of acetylcholine

• The influx of calcium ions

• The change in voltage due to sodium influx

• The release of synaptic vesicles