Awareness About The Noradrenaline Hormone
Neurons are the cells that transmit information in the nervous system. The signals from one neuron to the other are transmitted with the help of neurotransmitters released by the nerve terminals. Hormones are produced naturally in the body to stimulate various functions of the organs and to regulate the processes of the body and mind. Noradrenaline (NA) is one such hormone that functions as a hormone and a neurotransmitter.
Understanding The NA Hormone
Noradrenaline is an organic chemical belonging to the catecholamine family that functions in the brain and body. It is a stress hormone and affects the function of the brain, wherein attention or response is initiated. Thus, it is often known as ‘a flight or fight’ hormone. Noradrenaline mobilizes the brain and body into action and also increases alertness and promotes vigilance in stressful situations.
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Functions Of Noradrenaline
NA also helps in retrieval of memory and to focus attention. In the rest of the body, noradrenaline increases heart rate and blood pressure. It is generated by amino acid tyrosine that applies its effects by binding to a and 13 adrenoceptors, which triggers the narrowing of blood vessels. This vasoconstriction causes blood pressure to increase and affects the heart muscle. Addition ally, NA increases blood flow to the skeletal muscles, where the action is initiated and increases the release of glucose at the place of action. In contrast, it reduces blood flow to the gastrointestinal system and inhibits (restrains) voiding (urination) and also slows gut function.
Levels Of NA And Its Effects
As a person ages, the cerebral activity and cognitive functions slow down, as the release of noradrenaline is reduced. Low levels of noradrenaline can cause depression and one may feel fatigued, mental fog and a reduced interest in life. Further, a maniac episode of bipolar disease is now thought to be because of surplus of this hormone. On the other hand, low levels of noradrenaline are linked to ADHD (attention deficit hyperactivity disorder), fibromyalgia, and fatigue syndrome.
Footnote
The noradrenaline hormone has negative effects on the body, such as the increase in blood pressure and heart rate. It also affects the glucose transportation in the body.