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.
Figure 2.2: Neurons transmit information to other neurons. Information passes from the axon of the presynaptic neuron to the dendrites of the postsynaptic neuron. Figure 2.3: The synapse is the site where chemical signals pass between neurons.he neuron has processes called dendrites that receive signals and an axon that transmits signals to another neuron. The cell body, also called the soma, is the metabolic center of the neuron. The nucleus is located in the cell body, and most of the cellâs protein synthesis occurs in the cell body.