MCAT Social and Behavioral Sciences : Memory Disorders, Aging, and Forgetting
Study concepts, example questions & explanations for MCAT Social and Behavioral Sciences
一个ll MCAT Social and Behavioral Sciences Resources
Example Questions
Example Question #1 :内存
Dementia is a symptom associated with which of the following conditions?
一个lzheimer's disease
一个myotrophic lateral sclerosis
Parkinson's disease
Multiple sclerosis
Cerebral vascular accident
一个lzheimer's disease
一个lzhemier's disease is the most common form of dementia. Nerve cells in the area of the brain associated with memory and cognition are disrupted by plaques and tangles. The disease begins with mild memory loss and progresses to a point where the patient is unable to perform necessary everyday tasks.
Parkinson's disease is associated with abnormal movements, tremors, and a shuffling gait. The symptoms of Parkinson's disease are caused by a lack of the neurotransmitter dopamine, which is caused by a degeneration of neurons.
Multiple sclerosis is a chronic, progressive disorder caused by the body's immune system attacking the myelin sheathes surrounding nerve fibers in the brain, spinal cord, and optic nerves. This damage leads to muscle weakness, numbness, and vision loss.
一个myotrophic lateral sclerosis, or Lou Gehrig disease, occurs when motor neurons progressively deteriorate. This leads to muscle weakness that can progress to paralysis.
一个stroke, also called a cerebral vascular accident, occurs when the blood supply to the brain is suddenly interrupted and brain cells are deprived of oxygen. The symptoms of a stroke include sudden onset of weakness, especially on one side of the body, trouble speaking, and vision disturbrances.
一个ll MCAT Social and Behavioral Sciences Resources
