12.4 Synapses & Neurotransmitters (16min)

What is the primary difference between continuous conduction and saltatory conduction?

• Saltatory conduction occurs in the peripheral nervous system, while continuous conduction occurs in the central nervous system.

• Saltatory conduction involves impulses jumping between nodes of Ranvier, while continuous conduction does not.

• Continuous conduction is faster than saltatory conduction.

• Continuous conduction occurs in myelinated neurons, while saltatory conduction occurs in unmyelinated neurons.

Which type of synapse is commonly found in cardiac and visceral smooth muscle?

• Saltatory synapse

• Electrical synapse

• Chemical synapse

• Continuous synapse

What happens when an excitatory postsynaptic potential (EPSP) is generated?

• The postsynaptic neuron becomes more negative and inhibits the impulse.

• The postsynaptic neuron loses potassium ions, making it harder to reach threshold.

• The postsynaptic neuron depolarizes and is more likely to continue the impulse.

• The presynaptic neuron releases calcium ions into the synaptic cleft.

Which neurotransmitter is commonly associated with inhibitory effects in the brain?

• GABA

• Aspartate

• Glutamate

• Dopamine

What type of neural circuit allows one neuron to stimulate multiple neurons, such as in motor control?

• Diverging circuit

• Reverberating circuit

• Converging circuit

• Parallel after-discharge circuit