Թեմա - Nervous disorders
Տեսակ - Ռեֆերատ
Գին - 1800 դրամ
Առարկա - Անգլերեն լեզվով
Էջեր - 6
The term “nervous disorder” applies to any condition that is caused by a dysfunction in part of the brain or nervous system, resulting in physical and/or psychological symptoms.
The development of the human brain begins during pregnancy and continues through infancy, childhood and adolescence. Most brain cells are formed before birth but the trillions of connections between these nerve cells (neurons) are not developed until infancy.
The brain is composed of gray matter (neurons and interconnections) and white matter (axons surrounded by a myelin sheath). A motor neuron (above) carries impulses away from the brain.
The brain is self-organizing. It selects information to forward its growth and development. It also adapts to the environment. Experience of the environment through the senses of touch, smell, sight, taste and hearing produces connections in the brain.
All neurologic disorders involve the brain, spinal column or nerves. Symptoms depend on where damage occurs. Areas that control movement, communication, vision, hearing or thinking can be affected.
Neurologic disorders are wide ranging. They have various causes, complications and outcomes. Many result in additional needs requiring life-long management.
Symptoms of neurologic disorders vary. Physical, cognitive (or thinking), emotional and behavioral symptoms may be present, with specific disorders having combinations or clusters of these symptoms. For example, cerebral palsy tends to have more physical symptoms whereas ADHD tends to have greater effects on behavior.