*Remember to load your trailer with more weight in front of the trailer axle than behind it. A trailer with too much weight on the back end can put it and the tow vehicle into a violent and uncontrollable wag that can literally flip the tow vehicle. Overloading a trailer can cause serious injury or equipment damage.
Most recent answer: Dopamine is both a hormone and a neurotransmitter. It acts as a hormone in the blood and as a neurotransmitter in the central nervous system.
Dopamine, norepinephrine and epinephrine are a group of neurotransmitters called catecholamines. Norepinephrine is also called noradrenalin and epinephrine is also called adrenalin. Each of these neurotransmitters is produced in a step-by-step fashion by a different enzyme.eurotransmitters then cross the synapse where they may be accepted by the next neuron at a specialized site called a receptor. The action that follows activation of a receptor site may be either depolarization (an excitatory postsynaptic potential) or hyperpolarization (an inhibitory postsynaptic potential).