Stress – where it begins and what its role in human life
Human organism – highly organized system with numerous internal links and mechanisms of transmission of information from one organ to another. Unfortunately, the action of these mechanisms is not sufficient studied, but the problem, arising from their abuse are familiar to many.
For the modern man has become customary to use the term "stress" (From English. stress – pressure, push) as an explanation for many of the negative changes in the body, dysfunctions, diseases and mental disorders. However, stress, like any other phenomenon of life, It can be viewed from different angles. Is it really bad stress itself?
Studies have shown "a pioneer of stress" – Austrian (from 1931 g. – American, and then Canadian) физиолога XX в. T. Selye, higher animals and humans stress – one of the manifestations of the system a rapid reaction.
Development of stress mechanism
The signal of the danger comes from one or more of the senses (hearing, sight, touch, smell, taste) or, if the person foresees the danger, directly from the brain, and numerous nerves, both wires, It is transmitted to the hypothalamus – the control center of the endocrine and autonomic nervous systems, located in the brain. "Repel the attack!" – order with a portion of the hypothalamus hormone corticotropin sent to the pituitary gland – endocrine glands, which is often referred to as the "orchestra conductor of the hormonal". There hastily adrenocorticotropic hormone is synthesized and transported through the bloodstream to the adrenal cortex. The adrenal glands are released into the blood dose corticosteroids: norepinephrine and epinephrine.
After a moment, it increases blood sugar levels, accelerated breakdown of glycogen (carbohydrate, whose reserves are located directly in the muscles) and fat – the body needs the strength to fight. Dilate bronchi, breathing quickens, the heart begins to beat faster, increased blood pressure – in a moment of danger the body can not afford to lack of oxygen. The blood from the intestines to the muscles being transferred, the movement of food through the digestive tract slows down or stops – digestion of ingested can wait. All the senses are sharpened, any movement, sound, the smell of fixed instantly – because they may be a sign of an attack. Arm muscles, legs and body are filled with the blood, provided with the necessary energy and tense, increases sweating, increased blood clotting – Case, If you have to fight with the hot bloodbath.
Many people, fall into extreme situations and happily survived them, note, that in times of stress their strength seemed to have multiplied several times. The stress they could do, that in normal conditions it would not be able: eg, lift something very heavy, climb to the top of the column completely smooth, jump over the pit broadest etc. and thus save their lives.
Stress and progress
Modern man is much smaller, than its prehistoric ancestors, and higher animals, It depends on the nature. With the achievements of progress, he transforms the world, gets rid of its negative impact, forming its own external environment, making it more comfortable. Serve as protection from the cold, warm clothing and a heated housing, the heat saving air conditioners, and wild animals themselves often run away from man. But the stress of not getting smaller.
Stress – It is a universal reaction to danger. And transform the world, along with all the benefits of civilization is the source of stressors (factor, causing stress). A sudden power outage, broken phone, when an urgent need to call, broke halfway machine, all hands on deck at work, conflict in the public transport – All this takes a person out of balance, causing a surge of adrenaline, high blood pressure and heart palpitations. The bulk of the stressors of physical moves of mental, and the reaction of the body remains the same, requiring immediate Activism. And if nothing is done, discharge voltage does not occur (or it lags), and this is detrimental to our health. Restraint – Obligatory quality educated man – forces to suppress the natural desire to splash out their anger and thus contributes to the negative effects of stress.
