Question

Which hormone prepares the body to face dangerous situations?

Answer 1

The hormone which prepares the body to face dangerous situations is also known as the fight or flight hormone. It is a tyrosine amino acid derivative which is released in response to stress perception. The brain perceives stress and sends signals to the chromaffin cells of adrenal medulla to release the hormone in response.

Complete answer: The endocrine system is a very vast system of the body. Several glands in the body secrete several hormones for different functions. All the hormones hold a special significance in the body and are crucial for growth, development, reproduction, and many other functions.
The hormone which is known as the emergency hormone is Adrenaline. It is secreted by the adrenal gland and is known as the fight or flight hormone. During an emergency, or at times of dangerous situations, it initiates a rapid response which makes the person react to stressful conditions.
Whenever the person is in stressful conditions, the neurons send signals to the adrenal gland to increase the secretion of adrenaline. This increased adrenaline in the blood sends signals to the organs of the body to react to a particular situation. Generally, increased production of Adrenaline can cause increased heartbeat, decreased blood pressure, increased breathing or palpitation, and increase glucose and energy production. Also, there are a lot of ATP molecules generated at a very short interval of time, in case there is any fight or flight situation.
But over secretion of this hormone can lead to severe damage. Adrenaline is an important hormone to maintain the body’s ability to survive. Sometimes the body is not aware of real danger and starts secreting this hormone under the illusion of stress. This increased production when not facing any danger can make the person dizzy and can even alter his vision.
Due to this the glucose and ATP levels also increase which can make the person restless and irritated. It can also cause insomnia, heart damage, and nervousness.
Therefore adrenaline is the hormone that makes the body ready for dangerous situations.

Note:
The hormone which is responsible for preparing the body for a flight or fight situation is known as Adrenaline. It is also known as epinephrine belonging to the chemical class of catecholamines.
Adrenaline is a hormone but nor- Adrenaline is a neurotransmitter which is just a modified form of Adrenaline. Nor-Adrenaline is devoid of the methyl group at the nitrogen which is present in Adrenaline. Instead, it has a hydrogen substitution at the nitrogen in place of methyl substitution. This makes it more effective.