The video features a series of close-up shots of neurons, which are the fundamental units of the nervous system. The neurons are shown in a deep red color, with a glowing effect that highlights their intricate structure. The background is dark, which contrasts with the brightness of the neurons, making them stand out. The neurons are depicted with their dendrites, which are the branching structures that receive signals, and their axons, which are the long, slender structures that transmit signals. The video does not contain any text or subtitles.