Adrenaline - is one of the most powerful hormones.It is produced in the adrenal glands and is part of the body's system for responding to acute stress, which can be called the "fight or flight".This system causes the blood vessels to narrow, often beating heart and expand the airways.All these steps are aimed at increasing the flow of blood and oxygen to the muscles in the lungs.Also, the adrenaline is used as a medicine in some potentially life-threatening situations, such as anaphylactic shock.
Adrenal glands Adrenal glands in the adult have a size of about 7-8 cm are located directly above the kidneys.Adrenaline is one of several hormones that produce these glands.
These substances interact with various body tissues, preparing the body to respond to physical stress situation.
Fight or flight
expression "fight or flight" is often used to describe the body's response to situations of severe stress.This evolutionary adaptation allows you to react to the danger instantly.For example, the expansion
When a person is faced with a potentially dangerous situation, the hypothalamus, located in the brain, gives a signal to the adrenal glands release epinephrine and several other hormones directly into the bloodstream.The body responds to these hormones for a few seconds, giving the person almost instant physical impulse - strength and speed increase and the ability to feel pain is reduced.This hormonal surge is often called "adrenaline".
Adrenaline is not only a significant increase in power and performance, but also increases the rate of respiration, and helps sharpen the focus.A man may even feel dizzy and distortion of perception.Depending on the situation, these effects can last up to an hour.
If adrenaline stood out, but there is no real danger, a person can remain restless and irritable.The reason for this phenomenon is that epinephrine causes the body to produce glucose, blood sugar level in the blood increases, and the body receives the energy that does not exit.In the past, this effect was not as pronounced as people permitted in combating stress situations or other physical exertion.In today's world, the number of strong stress has increased many times, but they require little or no physical activity, so many people are exposed to stress, try to reduce the level of adrenaline, engaging in physical exercise.
Although adrenaline plays a key role in the survival of the body, over time, it can also cause negative effects.Long-term increase in the level of this hormone has a depressing effect on the heart muscle, and in some cases can lead to heart failure.Also, elevated levels of adrenaline can cause insomnia and nervous breakdowns that often indicators of chronic stress.
adrenaline used to treat anaphylactic shock.In addition, it is one of the main drugs used in the weakening of cardiac activity and cardiac arrest.