One of the first things that most designers forget about CSS descendant selectors is that they are flexible. When CSS defines a descendant, it doesn't care whether the tag in question is the direct child, the grandchild, or some great-great-great-descendant of the initial element.
From the retina, visual information passes onto the bipolar cells and then to the optic nerve's ganglion cells. The optic nerve, which begins at the retina, is the sole visual pathway to the brain. Light information is conveyed as an electrical action potential through the neurons.
1 It connects a large part of the peripheral nervous system to the brain. 2  Information (nerve impulses) reaching the spinal cord through sensory neurons are transmitted up into the brain.3  Signals arising in the motor areas of the brain travel back down the cord and leave in the motor neurons. Information (nerve impulses) reaching the spinal cord through sensory neurons are transmitted up into the brain. 2  Signals arising in the motor areas of the brain travel back down the cord and leave in the motor neurons.