Early changes in the brain during exposure to addictive drugs involves the insertion of AMPA receptors into neuron membranes located within the VTA. AMPA receptor is an ionotropic transmembrane receptor for glutamate that is responsible in mediating fast synaptic transmission in the central nervous system. They provide initial depolarization that ultimately results in NMDA receptor activation.
Catecholamines are largely adrenal hormones, so they cause a fight or flight response. That would include anxiety fear and panic, increasing attention and awareness of danger, and aggressive behavior. Some adrenal disorders that release too many catecholamines can cause hair loss and breathing problems. In short, all of these are potential effects of <span>catecholamines, but hair loss and breathing problems are weaker and less often, and only develop with disorders (or tumors in certain locations.</span>
These kinds of cells are body cells with a full set of chromosomes. Examples include blood cells, brain cells, skin cells
