Unlike Alzheimer's disease, which shrinks the hippocampus causing progressive memory loss, white matter disease is a more diffuse mind-robbing condition that targets small blood vessels deep within the brain's white matter. The disease hardens the tiny arteries, gradually restricting nutrients to white matter -- the connections between brain regions involved in executive abilities such as planning, organizing, problem-solving, and attention.
The eye is a part of the nervous sytem, which is essentially a network of neurons that coordinate actions and transmits signals throughout the body. There are two parts to the â¦ nervous system: central and peripheral.he nervous system. Your eyes are part of your brain. The majority of. your brain surface is light-sensitive.
eye. 1. The organ of the body with which an animal is able to see or sense light. In vertebrate animals, the eye occurs as one of a pair, each consisting of a spherical structure that is filled with fluid. Incoming light is refracted by the cornea and transmitted through the pupil to the lens, which focuses the image onto the retina. See more at compound eye, eyespot.