Multiple sclerosis (MS) is a disease that affects the nerve cells of the brain and the spinal cord. Some of the symptoms of MS are chronic pain, pins-and-needles sensations, muscle weakness, and visual disturbances. Study the image, and then explain the cause for these symptoms.
Answers
Answer:
Explanation:
Multiple sclerosis is an autoimmune disorder of nerve cells of spinal cord and brain. It is caused due to destructive immune response of body against covering of nerve cells . The axons of nerve cells are covered by a myelin-sheath, which provides insulation to the nerve cells and speeds up the rate of nerve transmission.
In healthy nerves, axons are insulated properly with myelin sheath and these nerve cells will perform perform proper function. In nerves affected with multiple sclerosis, nerve axons are demyelinated as the myelin sheath is damaged. It leads to impairment in signal transduction and results muscle pain, needles sensation, and deficiency in cognition, movement, or sensation.
Answer:
According to the image, the myelin sheath in a person with multiple sclerosis wears away. This damage hampers the ability of the nerve cells to transmit impulses as fast as they can. This inability results in symptoms such as visual disturbances. It also causes chronic, dull pain. These symptoms wouldn’t exist if the myelin sheath were intact.
Explanation: