Neurotransmitters Quiz

Which of the following best describes neurotransmitters?

• Hormones that travel in the bloodstream

• Chemical messengers that transmit signals across synapses

• Electrical signals that travel along neurons

• Proteins that repair damaged neurons

Where do neurotransmitters bind after crossing the synaptic gap?

• Axon terminals

• Dendrites

• Receptor sites on the postsynaptic neuron

• Myelin sheath

What is the role of receptor sites in neurotransmission?

• To release neurotransmitters into the synapse

• To bind neurotransmitters and trigger a response (in the postsynaptic neuron)

• To block neurotransmitters from reaching the neuron

• To produce neurotransmitters

Which neurotransmitter is primarily associated with the regulation of mood and emotional well-being?

• Acetylcholine

• Dopamine

• Glutamate

• Serotonin

What process occurs when neurotransmitters are reabsorbed by the presynaptic neuron?

• Reuptake

• Depolarization

• Synaptic drift

• Receptor binding

Which of the following neurotransmitters is classified as inhibitory?

• Adrenaline

• Glutamate

• Serotonin

• Dopamine

Which neurotransmitter is linked to the body's "fight or flight" response?

• GABA

• Serotonin

• Adrenaline

• Acetylcholine

What term describes a chemical that amplifies the effect of a neurotransmitter at a receptor site?

• Antagonist

• Agonist

What term describes a chemical that blocks or reduces the effect of a neurotransmitter at a receptor site?

• Antagonist

• Agonist

Which part of the neuron is responsible for releasing neurotransmitters?

• Dendrites (These are the branches of a neuron that receive signals from other neurons.)

• Axon terminals (Terminal buttons)

• Myelin sheath (This acts as an insulator, helping the electrical signal travel quickly along the axon)