March 1 Presidential Primary Details. From the Medford City Clerk. Presidential Primary Voter Registration Deadline: Feb. 10, 2016 at 8:00 PM. The deadline to register to vote in the Presidential Primary Election is Wednesday, February 10, 2016 at 8:00 PM. Check your voter registration and register online using the Secretary of the Commonwealth of Massachusetts Online Voter Registration System. In Personâ Registrars of Voters, Room 102, Medford City Hall. There will be four party ballots â Democratic, Republican, Green-Rainbow and United Independent. If you are registered in one of these parties, you may only vote on that partyâs ballot.
Neurotransmitters are chemicals that transmit messages from one nerve cell (neuron) to another. The nerve impulse travels from the first nerve cell through the axonâa single smooth body arising from the nerve cellâ to the axon terminal and the synaptic knobs.
Nerve cells communicate messages by secreting neurotransmitters. Neurotransmitters can excite or inhibit neurons (nerve cells). Some common neurotransmitters are acetylcholine, norepinephrine, dopamine, serotonin and gamma aminobutyric acid (GABA).Acetylcholine and norepinephrine are excitatory neurotransmitters while dopamine, serotonin, and GABA are inhibitory.Each neurotransmitter can directly or indirectly influence neurons in a specific portion of the brain, thereby affecting behavior.erve cells communicate messages by secreting neurotransmitters. Neurotransmitters can excite or inhibit neurons (nerve cells). Some common neurotransmitters are acetylcholine, norepinephrine, dopamine, serotonin and gamma aminobutyric acid (GABA).