What role does harmone adrenaline play in a human body?
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Epinephrine plays a central role in the short-term stress reaction—the physiological response to threatening, exciting or environmental stressor conditions such as high noise levels or bright light (see Fight-or-flight response). It is secreted by the adrenal medulla. When released into the bloodstream, epinephrine binds to multiple receptors and has numerous effects throughout the body. It increases heart rate and stroke volume, dilates the pupils, and constricts arterioles in the skin and gut while dilating arterioles in leg muscles. It elevates the blood sugar level by increasing hydrolysis of glycogen to glucose in the liver, and at the same time begins the breakdown of lipids in adipocytes. Epinephrine has a suppressive effect on the immune system.\n\nEpinephrine is used as a drug to promote peripheral vascular resistance via alpha-stimulated vasoconstriction in cardiac arrest and other cardiac dysrhythmias resulting in diminished or absent cardiac output, such that blood is shunted to the body's core. This beneficial action comes with a significant negative consequence—increased cardiac irritability—which may lead to additional complications immediately following an otherwise successful resuscitation. Alternatives to this treatment include vasopressin, a powerful antidiuretic which also increases peripheral vascular resistance leading to blood shunting via vasoconstriction, but without the attendant increase to myocardial irritability.\n\nBecause of its suppressive effect on the immune system, epinephrine is used to treat anaphylaxis and sepsis. Allergy patients undergoing immunotherapy may receive an epinephrine rinse before the allergen extract is administered, thus reducing the immune response to the administered allergen. It is also used as a bronchodilator for asthma if specific beta-2-adrenergic agonists are unavailable or ineffective. Adverse reactions to epinephrine include palpitations, tachycardia, anxiety, headache, tremor, hypertension, and acute pulmonary edema.\n\nA pheochromocytoma is a tumor of the adrenal gland (or, rarely, the ganglia of the sympathetic nervous system), which secretes excessive amounts of catecholamines, usually epinephrine.
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Working out increases body reactions and heart beat. Increased heart beat increases blood flow. Increased bloodflow and pressure from the heart to other parts of the body and from other body parts to the heart makes the veins to bulge. This is a natural thing that happens to all human beings.
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The answer is (b) noradrenaline.  The adrenal medulla is the inner portion of the adrenal gland. The adrenal medulla secretes the stress hormones noradrenaline and adrenaline.
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I'm not sure exactly what your question is, there's what happens chemically in the brain, there's what happens chemically in the lachrymal glands etc etc. What I can tell you is that the excretion of tears does not have a anti-toxic function as is generally believed. Emotional tears do not get rid of a relevant amount of toxins or hormones. \nAs far as I know, the biological function of crying has not yet been determined as such. Although it has been suggested that crying is more an effect of a certain emotional relaxation, sort of 'letting go' of tension after which the physical reaction of crying occurs.
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.............. connected to vital part of the body ............. \n check this out     http://www.answerbag.com/q_view.php/21788
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probably by the calming effect on our body, it induce balance secretion of hormones, relaxes the nerves and brai waves, improves respiratory and digestive activity, maintains normal cardiac output and homeostatis on blood pH.
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Balance you mean. Imbalance doesnot require regulation.\n\nThe process you refer to is urine formation. \n\nThe organ involved is the kidney (and its constituent nephrons).\n\nHormonal effects of aldosterone (and other mineralocorticoids of the adrenals), vasopressin, renin etc. also play a role. \n\nFollow the links below for more information.
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Anger and emotion causes your body to release chemicals into your blood stream that further amplify your aggression.  Counting  causes your body to focus on something else and in turn stops your brain from sending messages to release these chemicals into your body, and it also allows your body to burn up the chemicals your brain has already released, so when you are done counting your body is well on it's way to getting back to a emotionaly balanced state.
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In the first stage of GAS called alarm reaction, the body releases adrenaline and a variety of other psychological mechanisms to combat the stress and to stay in control. This is called fight or flight response. The muscles tense, the heart beats faster, the breathing and perspiration increases, the eyes dilate, the stomach may clench. Believe it or not, this is done by nature to protect you in case something bad happens. Once the cause of the stress is removed, the body will go back to normal.\n\nIf the cause for the stress is not removed, GAS goes to its second stage called resistance or adaptation. This is the body’s response to long term protection. It secretes further hormones that increase blood sugar levels to sustain energy and raise blood pressure. The adrenal cortex (outer covering) produces hormones called corticosteroids for this resistance reaction. Overuse by the body's defense mechanism in this phase eventually leads to disease. If this adaptation phase continues for a prolonged period of time without periods of relaxation and rest to counterbalance the stress response, sufferers become prone to fatigue, concentration lapses, irritability and lethargy as the effort to sustain arousal slides into negative stress.\n\nThe third stage of GAS is called exhaustion. In this stage, the body has run out of its reserve of body energy and immunity. Mental, physical and emotional resources suffer heavily. The body experiences "adrenal exhaustion". The blood sugar levels decrease as the adrenals become depleted, leading to decreased stress tolerance, progressive mental and physical exhaustion, illness and collapse.
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Blood's role in the body is three fold: First, it acts as a transort system for nurtients and such to reach the different parts of the body. Secondly as a defence system, where lymphocytes are active in controlling pathogens that enter the body (such as bacteria, viruses, fungi, etc). Lastly, the blood acts as a sealant. When there is damage to the body, the platelets in the blood seal up the wound.\n\nBlood is very important to the body. Without it, you wouldn't exist.
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The adrenal gland is reponsible for alot of hormone (epinephrine, norepinephrine or adrenaline)(sex hormones and also cortisol and aldosterone.  Any one of these hormones can build up causing life threatening problems.\n\nThe most serious would be a tumor that increases the amount of adrenaline because it raises your blood pressure and heart rate and you can die from that.
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Humans usulaly crave contact with other humans. Ever notice how babies are, they'll put their hands all over you, hug your leg, crawl in your lap...  We're social creatures. \n\nA good massage can give relief to stress. After a car accident, I was having one 3 times a week. That was heavenly.
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The steam relaxes stiff joints and muscles, deeply cleanses your skin, helps eliminate toxins, and boosts your immune system.\n\nSteam Inhalation is an effective treatment in respiratory conditions and is highly recommended for treatment of the common cold, sinusitis, bronchitis, allergies and asthma.\n\nApart from the immune system stimulating effects of sweat therapy, many tout it as one of the most effective and painless detoxifying treatments available.\n\n As pores open and perspiration begins, tone-dulling toxins are naturally expelled, leaving behind more supple, cleaner skin.\n\nSteam treatments have a stimulating effect on the cardiovascular system. The pulse ate increases from 75 beats per minute to between 100-150 beats per minute during a 15-20 minute treatment. This increase blood circulation, but not blood pressure, since the heat also causes the tiny blood vessels in the skin to expand, accommodating the increased blood flow. The dilation of the capillary vessels enables the bloodstream to carry great amounts of nutrients to the skin, including the increased absorption of the essential oils that are carried in the bloodstream.
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All glands have special roles to play in a body, otherwise they won't be there.  Adrenal glands are no exception as their functions are linked with the heart!  For more information, consult a book on Human Body!
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Our muscles, liek any oteh rtissue constantly need oxygen. while teh heart pumps teh blood to teh muscle tissues via arteries, teh motion of teh muscle temsleves when they flex helps propel the blood through teh veins back to teh heart. When we sit for long hoursm our back muscles barely move, therefore they do get poor circulation, which starves them of oxygen, resulting in acumulation of toxic lactic acid which causes cramping and knotting of back muscles. Stress doesnt hlep , because it causes a diminished blood flow to muscles and increased flow to internal organs as teh body tries to protect itself from iminant danger.\nA massage forces fresh oxygen rich blood into teh muscle, allowing teh muscle to relax. This sends a feel good signal to teh brain. Also skin to skin contact releases a hormone called oxytocin that promotes a relaxed and eup[horic state
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Generally, the Sympathetic pathways of the Autonomic Nervous System are sympathetic to the body's needs at times of 'stress'.\nSo for example, the increase in carbon dioxide levels as exercise begins is the stimulus to ...
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Generally, caffeine will stimulate the Sympathetic Nervous System, thus raising the heart rate