In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.n 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus.
Norepinephrine, also called noradrenaline, is an organic chemical in the catecholamine family that functions in the human brain and body as a hormone and neurotransmitter.n the most basic terms, the function of norepinephrine is to mobilize the brain and body for action. Norepinephrine release is lowest during sleep, rises during wakefulness, and reaches much higher levels during situations of stress or danger, in what has been called the fight-or-flight response.
Low Norepinephrine Causes. Norepinephrine is a type of hormone and a chemical which is produced by the adrenal glands. It acts as an important neurotransmitter.The function of norepinephrine is to make the system able to act and react, to extreme stressful situation.ow Norepinephrine Causes. Norepinephrine is a type of hormone and a chemical which is produced by the adrenal glands. It acts as an important neurotransmitter.