seven
synapse
The voltage-gated Ca2+ channels are opened when an action potential releases neurotransmitters from a neuron. A neuron transmits nerve impulses.
Neurotransmitters are used to send messages from cell to cell, usually neuron to neuron. Neurotransmitters are released from the pre-synapse, which is at the axon terminus. These neurotransmitters are picked up by the post-synapse on the receiving cell. These post-synapses are located on structures called dendrites or on the cell body.
A small membrane-bound structure in the axon terminals of nerve cells that contains neurotransmitters and releases them by exocytosis when an action potential reaches the terminal.
DNA ligase
http://wiki.answers.com/Q/There_are_how_many_major_neurotransmitters_that_appear_to_account_for_most_of_the_effects_produced_by_the_action_of_drugs_of_abuse_on_the_brain"
The nervous system is traditionally considered the main producer of neurotransmitters. They are produced in the cyton, or soma; the body of the nerve cell that contains the nucleus. They are then transported to the synaptic vessicles where they wait to be released by an action potential by stimulation.
synapse
action potential
cAMP
Yes.
site of action is the location (site) where the drug do there action ........ while onset of action is the starting of effects produced due to drug............... both are clearly different..........
cAMP
The action potential stimulates the axon terminal to release its neurotransmitters. The neurotransmitters attach themselves to the dendrote of the next neuron, so that it will open its NA+ channels.
neurotransmitters are called Inhibitory if the activation of the receptors causes hyper-polarisation and depresses action potential generation (slows down processes)
neurotransmitters. These neurotransmitters are released into the synaptic cleft to relay signals to the next neuron in the communication pathway.
cAMP