Which best describes the transmission of messages at the synapse?


a.
Hormones are released by pre- and post-synaptic neurons, transmitting messages across the synapse.


b.
Presynaptic neurons release neurotransmitters which travel across the synaptic cleft, binding to post-synaptic receptor sites.


c.
Postsynaptic neurons release neurotransmitters which travel across the synaptic cleft, binding to pre-synaptic receptor sites.


d.
Small nerve filaments bridge the synaptic cleft, transmitting the nerve impulse between primary neurons.