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Fainting Learning Center
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Stress is defined as an organism's total response to environmental demands or pressures. When stress was first studied in the 1950s, the term was used to denote both the causes and the experienced effects of these pressures. More recently, however...
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Stress can come from any situation or thought that makes you feel frustrated, angry, or anxious. What is stressful to one person is not necessarily stressful to another. Anxiety is a feeling of apprehension or fear. The source of this uneasiness i...
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Disturbance in the physiology of the individual. Among psychologists and psychiatrists, stress refers to a psychological reaction within the person to events that generate strong emotion that cannot be easily regulated; for other social scientists...
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Stress is defined as an organism's total response to environmental demands or pressures. When stress was first studied in the 1950s, the term was used to denote both the causes and the experienced effects of these pressures. Since the 1990s, howev...
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Over the course of evolution, the human mind and body have developed means of handling stressful situations. Over the short term, such stress response pathways are highly adaptive, allowing a person to manage his or her resources in order to navig...
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Stress is a term that refers to the sum of the physical, mental, and emotional strains or tensions on a person. Feelings of stress in humans result from interactions between persons and their environment that are perceived as straining or exceedin...
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Stress is an individual's physical and mental reaction to environmental demands or pressures.
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The heart, which is about the size of a human fist, is the body's largest, strongest, and most important muscle. The heart continuously pumps blood through the body, helps regulate and prolong health, and controls the flow (circulation) of blood t...
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Heart disease is any disorder that affects the heart's ability to function normally. Various forms of heart disease include: Alcoholic cardiomyopathy; Aortic regurgitation; Aortic stenosis; Arrhythmias; Cardiogenic shock; Congenital heart disease;...
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Heart disease is the narrowing or blockage of the arteries and vessels that provide oxygen and nutrient-rich This illustration shows hypertrophic muscle in the heart. The lesions are due to an incompetent aortic valve. ( Illustration by Bryson Bio...
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Dehydration means your body does not have as much water and fluids as it should. Dehydration can be caused by losing too much fluid, not drinking enough water or fluids, or both. Vomiting and diarrhea are common causes. Infants and children are mo...
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Dehydration is the excessive loss of water from the body. Water can be lost through urine, sweat, feces, respiration, and through the skin. Symptoms of dehydration in order of severity are: thirst, nausea , chills, clammy skin, increased heart rat...
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Dehydration is the loss of water and salts that are essential for normal body function.
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Dehydration is the excessive loss of water from body tissues accompanied by an imbalance in essential electrolytes, such as sodium, potassium, and chloride.
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Dehydration is the loss of water and salts essential for normal body function.
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Hyperventilation is rapid or deep breathing that can occur with anxiety or panic. It is also called overbreathing, and may leave you feeling breathless. See also: Rapid shallow breathing
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Hypoglycemia is a condition characterized by low blood sugar, or abnormally low levels of glucose in the blood.
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Hypoglycemia is a condition that occurs when your blood sugar (glucose) is too low.
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The condition called hypoglycemia is literally translated as low blood sugar. Hypoglycemia occurs when blood sugar (or blood glucose) concentrations fall below a level necessary to properly support the body's need for energy and stability througho...
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Hypoglycemia, or abnormally low blood sugar, is caused by the impaired response (or failure) of the liver to release glucose as blood sugar levels decrease. The imbalance in the rate of glucose released from the liver and its use by other body tis...
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Abnormally low levels of glucose in the blood. Hypoglycemia, or insulin shock, is brought on by abnormally low levels of glucose in the blood. The condition is common among individuals with diabetes mellitus who are administering their own insulin...
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Ethyl alcohol, or ethanol, is the most commonly used drug in the world. Pharmacologically, alcohol is classified as a central nervous system depressant. Like other depressants, in small doses alcohol slows heart rate and respiration, decreases mus...
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Alcoholism is defined as alcohol seeking and consumption behavior that is harmful. Long-term and uncontrollable harmful consumption can cause alcohol-related disorders that include: antisocial personality disorder , mood disorders (bipolar and maj...
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Heat emergencies fall into three categories of increasing severity: heat cramps, heat exhaustion, and heatstroke.
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Antihypertensive drugs are medicines that help lower blood pressure.
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Antihypertensive drugs are medicines that help lower blood pressure .
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Antihypertensive drugs are medicines that help lower blood pressure.
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