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.
Nervous impulses are electrical signals that travel along neurons. The electrical signals cannot travel from one neuron to the next directly. The signal crosses the gap, called a synapse, between cells in chemical form. One neuron releases chemicals in response to an action potential (nerve impulse).The chemicals travel across the synapse and stimulate an action potential in the next neuron. These chemicals are known as neurotransmitters.he signal crosses the gap, called a synapse, between cells in chemical form. One neuron releases chemicals in response to an action potential (nerve impulse). The chemicals travel across the synapse and stimulate an action potential in the next neuron. These chemicals are known as neurotransmitters.