GROSS ANATOMY

Detailed explanation-1: -Norepinephrine, also called noradrenaline, is both a neurotransmitter and a hormone. As a neurotransmitter, it’s a chemical messenger that helps transmit nerve signals across nerve endings to another nerve cell, muscle cell or gland cell.

Detailed explanation-2: -Neurotransmitter – A chemical released from a neuron following an action potential. The neurotransmitter travels across the synapse to excite or inhibit the target neuron.

Detailed explanation-3: -Neurotransmitters are chemical messengers that your body can’t function without. Their job is to carry chemical signals (“messages”) from one neuron (nerve cell) to the next target cell. The next target cell can be another nerve cell, a muscle cell or a gland.

Detailed explanation-4: -First identified in the 1940s by Swedish physiologist Ulf von Euler, norepinephrine, also known as noradrenaline, is a neurotransmitter of the brain that plays an essential role in the regulation of arousal, attention, cognitive function, and stress reactions.

Detailed explanation-5: -Norepinephrine release in the brain represents an important part of the immediate stress response, reacting within seconds. The majority of noradrenergic cell bodies are located in the brain stem, in the LC, with axons that extend throughout the cerebral cortex and to multiple subcortical areas.