structural unit of the nervous system; a cell with specialized
processes that are electrically excitable
process of how one neuron “talks” or communicates
information with another neuron.
A chemical that act as a messenger between cells in the brain
and nervous system; it is released from the axon of one neuron
and binds to a specific site in the dendrite of an adjacent
neuron, thus triggering a nerve impulse in that neuron. In
this way the “message” is transmitted.
– a cellular organelle that transports vesicles from
the neuronal cell body down the axon to the nerve terminal;
also acts in the recycling of neurotransmitter vesicles.
terminal – the end of the axon where neurotransmitters
are stored in “containers” made of membrane called
vesicles. When an electrical change is conducted down the
axon to the nerve terminal, vesicles cluster at the synapse
to be released through the process of exocytosis (cell vomiting).
the space that separates neurons, across which information
is transmitted by chemical neurotransmitters diffusing from
the nerve terminal of one neuron to the dendrite of another
a neurotransmitter in the brain that modulates mood, appetite,
sexual activity, aggression, body temperature and sleep.
specialized process of the neuron that usually conveys signals
from the neuron to other neurons or muscle.
receptors or receptor proteins- A binding site located
on the dendrite of a neuron to which specific molecules like
neurotransmitters will chemically bond; this causes a change
in the shape of the protein, which opens ion channels in the
“receiving” neuron, causing a change in electrical
activity which is propagated to the cell body of that neuron.
In this way the “chemical” message is transduced
to an “electrical” message.
the chemical process of breaking down a neurotransmitter usually
through the action of an enzyme.
the process of recapturing neurotransmitters back into the
nerve terminal to be recycled and used again in the process
3,4-methylenedioxymethamphetamine, and is also known as MDMA,
XTC, X, Adam, Clarity, or Lover’s Speed
Emission Tomography (PET)- a nuclear medicine diagnostic
imaging technology used for viewing brain activity by measuring
the flow of blood containing radioactive atoms that emit positrons.