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 Sensory neuron(s) then transmit information from the sensory receptor(s) to the Central Nervous System (i.e. the brain and spinal cord, sometimes referred to in the abbreviated form: C.N.S.). 2  This is happens because peripheral nerves connect to the spinal cord via the network of nerves within the nervous system.n a general case, the pathway of a nerve impluse may be summarised as in the following diagram: Figure (1): The Pathway of a Nerve Impulse. 1  This indicates that the first event in this sequence is a Stimulus. ( 2 Stimuli is the plural form, referring to more than one stimulus.).