Synapses

The structure within the presynaptic neuron's axon terminal that contains neurotransmitter waiting to be released:

• chemical synapse

• synaptic vesicle

• postsynaptic neuron

• synaptic neuron

The name for the very narrow gap between the two cells in a synapse:

• synaptic cleft

• electrical synapse

• chemical synapse

• ganglion

Neurotransmitters that lead to hyperpolarization of the postsynaptic neuron:

• depolarizing neurotransmitters

• inhibitory neurotransmitters

• repolarizing neurotransmitters

• hyperpolarizing neurotransmitters

A structure that requires the use of a neurotransmitter to allow one cell to communicate directly with another cell:

• chemical synapse

• neurotransmitter

• postsynaptic neuron

• presynaptic neuron

The general term for a structure where one cell can directly communicate with another cell:

• synaptic cleft

• synaptic vesicle

• synapse

A chemical released by neurons into a synapse to send a signal to another cell:

• synaptic vesicle

• electrical synapse

• neurotransmitter

• action potential

A typically inhibitory neurotransmitter, associated with regulating mood, appetite, circadium rhythm, and sleep:

• seratonin

• dopamine

• Na+

• K+

The channels that are opened by an action potential reaching an axon terminal, sending the final trigger to release neurotransmitters:

• ligand-gated sodium channels

• ligand-gated potassium channels

• voltage-gated calcium channels

• voltage-gated potassium channels

The structure at the end of a neuron's axon at a chemical synapse that contains and releases neurotransmitter:

• axon terminal

• electrical synapse

• postsynaptic neuron

• presynaptic neuron

The typically excitatory neurotransmitter that influences emotion and attention, and is active in reward centers in the brain:

• K+

• serotonin

• dopamine

• Na+