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Search results 2031 - 2040 of 8374 matching essays
- 2031: Lucid Dreaming
- ... the people in the dream are just figments of their imagination. They are also unaware that they can suffer no physical damage while in the dream or that they are actually in bed. Lucidity and control in dreams are not the same thing. It is possible to be lucid and have little control over dream content, and conversely, to have a great deal of control without being explicitly aware that one is dreaming. Lucid dreams usually happen during REM sleep. Working at Stanford University, Dr. Stephen LaBerge proved this by eliciting deliberate eye movement signals given by lucid dreamers ...
- 2032: How Nutrients Get in, and Wastes Out.
- ... system are not controlled as well as the kidney, and can lead to loss of salt. Nervous System The nervous system controls a large part of the activity of the digestive and excretory systems. The control is exercised through the autonomic nervous system, of which there are two parts. The first part, controlling increase in activity, is called the sympathetic system. And second, controlling decrease in the level of activity is the parasympathetic system. Both systems are unconscious, only chewing, swallowing and the anal and uretheral sphincters are under conscious control. Endocrine System The endocrine system deals with hormones, which regulate the metabolic rates of cells and organs. They are much like nerves, but target only certain parts of the body. They are essential to maintain ... and controls the amount of gastric juice produced. They also regulate excretions such as saliva. The hormones controlling the digestive and excretory systems are located some distance away from the cells that they have to control, therefore some method of transport must be utilized. This method is the bloodstream. The hormonal glands secrete their hormones into the bloodstream. These hormones then travel to the target organ or cell, and regulate ...
- 2033: Amyotrophic Lateral Sclerosis (Lou Gherig's Disease)
- ... to chromosome 21. The defect is inherited as an autosmal dominant trait. Other theories such as metal poisons, viral infections, even aging have been considered. ALS attacks the motor neurons in your nervous system that control your muscles. Your motor neurons slowly deteriorate, causing your muscles to not receive information from your brain. Your muscles then become useless and begin to deteriorate. Symptoms of ALS include: Tripping and falling Loss of motor control in hands and arms Difficulty speaking and swallowing or difficulty breathing Persistent fatigue Twitching and cramping, sometimes severely As ALS progresses, all voluntary muscles become useless. The patient cannot eat, breathe or communicate with others ... the only thing keeping them alive. ALS can lead to total paralysis. Although there is no cure, medications such as siazepam can assist with controlling spasms and muscle cramps and saliva. Siazepam can also help control muscle twitching. Physical therapy is important for patients with ALS to maintain flexibility in joints and to prevent contractures, or fixations of muscles. Diagnosis of ALS is difficult, since there is no clinical or ...
- 2034: AIDS and HIV
- ... fluids, it is not transmitted through casual contact or by biting or blood sucking insects. Development of the AIDS Epidemic The first case of AIDS were reported in 1982, epidemiologists at the Center of Disease Control immediately began tracking the disease back wards in time as well as forward. They determined that the first cases of AIDS in the United States probably occurred in 1977. By early 1982, 15 states, the ... sexual partner. 1983 was when the first heterosexual (Male to female; female to male) transmission was reported. In 1985, 1.7 percent of the adult cases of AIDS reported to the CDC (Center for Disease Control) were acquired through heterosexual activity; projections suggest that by 1991 the proportion will rise to 5 percent. Heterosexual contact is the only transmission category in which women outnumber men with AIDS. Heterosexual contacts accounts for ... between the host cell and elements in the viral LTR. The virus itself has no way of regulating when, here, or how much virus is produced. In contrast, the human immunodeficiency viruses have elaborate regulatory control mechanisms in the form of specific genes. Some of the genes permit explosive replication; other appear to inhibit production of virus. Mechanisms that suppress the production of certain viral proteins, such as the envelope ...
- 2035: Medicine: "Microsurgery: Sew Small"
- ... again successfully. The more blood vessels reattached, the better the survival chances for a toe or a finger. The finer the nerve resection, the better the feeling in a damaged part of the face, or control in a previously useless arm. But the wounded and severed body part must be treated carefully. If a small part of the body, such as a finger is cut off, instead of torn, wrapped in ... this case, you are your own best friend. In everyday use, however, microsurgery is proving to be a miracle worker, large and small. We take for granted, for instance, all the complex nerve and muscle control that goes into a simple a gesture as smiling. But one young woman couldn't. An accident left her with a face that was damaged and unable to smile. Microsurgery reconnected severed nerves, giving muscle control back to her face, restoring her looks and giving her something to smile about.
- 2036: Angina Pectoris
- ... regulates the emotions. The brain controls the expanding and narrowing of the arteries when necessary. The pressures of modern life: aggression, hostility, never-ending deadlines, remorseless, competition, unrest, insecurity and so on, can trigger this control mechanism. When you become emotional, the chemicals that are released, such as adrenaline, noradrenaline, and serotonin, can cause a further constriction of the coronary arteries. The pituitary gland, a small gland at the base of the brain, under the control of the hypothalamus, can signal the adrenal glands to increase the production of stress hormones such as cortisol and adrenaline even further. Coronary spasm - Sudden constrictions of the muscle layer in an artery can cause ... as pins and needles and numbness in limbs, muscle weakness, and liver damage. It may also precipitate diabetes, and damages to the retina. SURGERY When medications or any other means of treatment are unable to control the pain of angina attacks, surgery is considered. There are two types of surgical operation available: Coronary bypass and Angioplasty. The bypass surgery is the more common, while angioplasty is relatively new and is ...
- 2037: Understanding Panic Disorders
- ... like driving a car or walking to work. Suddenly, the person is struck by a barrage of frightening and uncomfortable symptoms. These symptoms often include terror, a sense of unreality, or a fear of losing control. The symptoms usually lasts several seconds, but may continue for several minutes. The symptoms gradually fade over the course of about an hour. Initial panic attacks may occur when people are under considerable stress, from ... s only uneasinessit will pass that help to reduce anxiety and ward off a panic attack. Specific procedures for accomplishing this are taught. By modifying thought patterns in this way, the patient gains more control over the problem. The next alternative in dealing with panic disorders, is the use of medications. In this treatment approach, which is also called pharmacotherapy, a prescription medication is used both to prevent panic attacks ... suicidal tendencies. In conclusion, panic disorders can become paralyzing if they are not dealt with properly. There is therapy and medication, that can safely assist in a person's recovery. It does not have to control a person's life, as long as they are willing to seek the necessary help that is available. BIBLIOGRAPHY Barlow, D.H., and Craske, M.G. Mastery of Your Anxiety and Panic. Albany, Y: ...
- 2038: Sports Therapy
- ... Visualization." By creating a mental picture of the task the brain can develop the situation within the brain creating awareness before it actually occurs. Thus having this picture in place, your mind will have better control over your emotions. This makes it much easier to control their performance. These mental techniques, which psychologists have prescribed for athletes allow them to reach the peak of their athletic performance. These techniques help athletes visualize images before they occur, find effective relaxation system and ... daily. Maintaining a solid sub-conscentious mine, they were able to achieve maximum potential and results. It takes all of these components outlined in this report to accomplish the objectives. However, all were able to control the mental aspects that enable them to achieve higher goals than the average person in today's society, through this educational process of self therapy.
- 2039: Is Psychology a Science?
- ... process is scientific in its element. The hypothesis is framed, variables are operationalised separately, a standard procedure is developed that is maintained throughout the experiment, subjects are scientifically selected, results are tested and conclusions drawn. Control groups are often used, similar in essence to control chemicals used in chemistry. These control groups are not exposed to the manipulation but instead to neutral conditions, providing a standards to compare results. In some cases researchers carry out blind studies where subjects are kept unaware of the aspects ...
- 2040: The Effects of Alcohol on People
- ... term alcoholics or heavy drinkers behavior. ( Pittman , page 5 ) Alcohol is a drug and downer that lowers the activity you feeling and reactions which is why alcohol related traffic accidents. Alcohol may also effect the control center of the brain which is the reason people do stupid stuff because the person does not know and can not remember what they are doing , or going to do in the further and had done in the past. ( Pittman , page 6 ) A intoxicated person or drunk person may lose their self control or lose their member and start trouble with a person or people or anything that gets in their way. Heavy drinkers or alcoholics may behave in uncontrolled or ways unacceptable to other people and themselves. While drinking a person or people may experience or feel mental confusion or dizz and lose control and hurt themselves. ( Pittman , page 6 ) While drinking alcoholics or very heavy drinkers may be unable to walk or run or even stand steadily with out falling to the ground which can cause psychical ...
Search results 2031 - 2040 of 8374 matching essays
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