As you are walking home a night you suddenly hear footsteps behind you. A neurotransmitter norepinephrine is likely to be activated.
Norepinephrine is a neurotransmitter and a stress hormone released from the adrenal gland. Norepinephrine is a chemical messenger from the central nervous system of the body that regulates various functions such as blood flow to skeletal muscles, mood stability, glucose level, and skeletal muscle contraction.
Postganglionic are specialized neurons that generate norepinephrine. The internal part of the adrenal glands known as the adrenal medulla also produced norepinephrine. In adrenal glands, the sympathetic nervous system triggers the release of norepinephrine which is responsible for flight or fight response in a threatful situation. While walking in the dark at night, an individual can get alert due to the release of norepinephrine.
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