The following steps refer to various stages in transmission at a chemical synapse.1.Neurotransmitter binds with receptors associated with the postsynaptic membrane. 2.Calcium ions rush into neuron's cytoplasm. 3.An action potential depolarizes the membrane of the axon terminal. 4.The ligand-gated ion channels open. 5.The synaptic vesicles release neurotransmitter into the synaptic cleft. Which sequence of events is correct?

Neurons communicate with each other at junctions called synapses. The neuron that sends the signal is called the presynaptic neuron, and the neuron that receives the signal is called the postsynaptic neuron.  Neurons communicate using both electrical and chemical signals: Electrical signals: Sensory stimuli are converted to electrical signals, which are carried along neurons as action potentials. Chemical signals: In most synapses, chemical messengers are released to communicate using chemical messengers.  Synapses can be classified into three types based on anatomy: Axoaxonic synapses:... Show more

Neurons communicate with each other at junctions called synapses. The neuron that sends the signal is called the presynaptic neuron, and the neuron that receives the signal is called the postsynaptic neuron. 

Neurons communicate using both electrical and chemical signals:
Electrical signals: Sensory stimuli are converted to electrical signals, which are carried along neurons as action potentials.
Chemical signals: In most synapses, chemical messengers are released to communicate using chemical messengers. 

Synapses can be classified into three types based on anatomy:
Axoaxonic synapses: The axons of two different neurons meet.
Axodendritic synapses: The axon of one neuron terminates on the dendrite of another neuron.
Axosomatic synapses: The axon of one neuron attaches to the soma (cell body) of another neuron. 

Synapses can also be classified into two types based on function or physiology:
Electrical synapses: These are faster than chemical synapses.
Chemical synapses: These are more common. 

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