Synaptic Surge: Mastering the Neural Relay

Which of the following structures is directly involved in the release of neurotransmitters into the synaptic cleft?

• Myelin sheath

• Synaptic vesicles

• Dendrites

• Nucleus

What triggers the release of neurotransmitters from the presynaptic neuron?

• Decrease in sodium ions (Na⁺)

• Increase in calcium ions (Ca²⁺)

• Increase in potassium ions (K⁺)

• Decrease in neurotransmitter levels

What is the primary role of neurotransmitters in synaptic transmission?

• To carry electrical signals across the synaptic cleft

• To bind to receptors on the postsynaptic neuron

• To generate action potentials in the presynaptic neuron

• To provide energy for synaptic function

How is the signal terminated after neurotransmitter release in the synaptic cleft?

• Continuous release of neurotransmitters

• Uptake by glial cells

• Diffusion away from the synapse

• Degradation by enzymes or reuptake into the presynaptic neuron

In the context of synaptic transmission, what role do receptors on the postsynaptic neuron play?

• They release neurotransmitters into the synaptic cleft.

• They receive and bind to neurotransmitters.

• They generate neurotransmitters.

• They degrade neurotransmitters in the synaptic cleft.