Parcel Select. Parcel Select is an economical choice for large or heavy packages and is the only USPS service that can be used for packages over 108 in girth. Cost is determined based on the distance, weight and dimensions of the mailpiece.
Definition of dopamine. : a monoamine C8H11NO2 that is a decarboxylated form of dopa and that occurs especially as a neurotransmitter in the brain.
Dopamine is a catecholamine neurotransmitter that activates five known types of dopamine receptors (D1 through D5) and acts as a precursor for the neurotransmitters norepinephrine and epinephrine. Dopamine plays an important part in most aspects of human consciousness, including âpunishment and rewardâ.