Tomy , 8/19/2007
I thought it's a sign for your nervous feeling. Is it right?
Josyvan , 7/20/2007
Stress influences mental health as well as physical health. People who experience a high level of stress for a long time—and who cope poorly with this stress—may become irritable,
Josyvan , 7/20/2007
Ordinarily the immune system is a marvel of precision. It protects the body from disease by seeking out and destroying foreign invaders, such as viruses and bacteria. But there is substantial
Josyvan , 7/20/2007
stress,affect,our,lifie,DiseaseStress TestThe stress test, also called an exercise electrocardiogram, measures the heart rate of a person during exercise and identifies any abnormal changes in heart function. Such changes may
Josyvan , 7/20/2007
When a person appraises an event as stressful, the body undergoes a number of changes that heighten physiological and emotional arousal. First, the sympathetic division of the autonomic nervous
Josyvan , 7/20/2007
A person who is stressed typically has anxious thoughts and difficulty concentrating or remembering. Stress can also change outward behaviors. Teeth clenching, hand wringing, pacing, nail biting, and
Josyvan , 7/10/2007
The autonomic nervous system regulates the life support systems of the body reflexively—that is, without conscious direction. It automatically controls the muscles of the heart, digestive
Josyvan , 7/10/2007
Memory is usually considered a diffusely stored associative process—that is, it puts together information from many different sources. Although research has failed to identify specific
Josyvan , 7/10/2007
Language involves specialized cortical regions in a complex interaction that allows the brain to comprehend and communicate abstract ideas. The motor cortex initiates impulses that travel
Josyvan , 7/10/2007
The visual system of humans is one of the most advanced sensory systems in the body (see Vision). More information is conveyed visually than by any other means. In addition to the structures of
Josyvan , 7/10/2007
The brain functions by complex neuronal, or nerve cell, circuits (see Neurophysiology). Communication between neurons is both electrical and chemical and always travels from the dendrites of a