Multiple Sclerosis (MS) Is an Autoimmune Disease That Affects the Brain

question 15

Essay

Multiple sclerosis (MS) is an autoimmune disease that affects the brain and spinal cord.
MS affects women more than men, and is most commonly diagnosed between the ages of 20 and 40. MS sufferers typically have problems of coordination and walking. The standard care for some sufferers is a plastic device affixed to the lower leg and ankle. In a recent test of this device, volunteers with MS were randomly assigned to two experimental groups. The volunteers in one group used the plastic device; the volunteers in the other group did not use the plastic device. Each individual was timed as he or she climbed a set of stairs. Times, measured without the device (ND) and with the device (D), are presented below.

-Construct a back-to-back stem-and-leaf display that will allow comparison of thetimes on the stair-climbing task.

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Definitions:

Nerve Impulses

Electrical signals that transmit information along the nerve fibers, essential for communication within the nervous system.

Multiple Sclerosis

A chronic autoimmune disease affecting the brain and spinal cord, leading to varying levels of physical and cognitive disability.

Myelin Sheath

A protective layer of fatty substance that wraps around nerve fibers, enhancing the speed and efficiency of electrical signal transmission.

Action Potential

Action Potential is a momentary change in electrical potential on the surface of a neuron that occurs when it is activated and is capable of transmitting an impulse.