The Sopranos (season 6) The sixth and final season of the HBO drama series The Sopranos was broadcast in two parts, the first beginning on March 12, 2006 and ending after twelve episodes on June 4, 2006. The first of the final nine episodes premiered on April 8, 2007 with the series finale airing on June 10, 2007.
The brain is a complex organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It contains billions of nerve cells that are connected by synapses to other cells and can send a train of signal pulses throughout the body.he brain is a complex organ that serves as the center of the nervous system in all vertebrate and most invertebrate animals. It contains billions of nerve cells that are connected by synapses to other cells and can send a train of signal pulses throughout the body.
Although the invertebrate nervous system is usually much simpler than the nervous systems found in vertebrates, there is still a broad range in complexity depending on the type of invertebrate. The simplest type of nervous system is found in hydras and jellyfish (cnidarians) and is referred to as a nerve net..Nerve nets do not have distinct central or peripheral regions, and lack anything that resembles a brain. Instead, the scattered nerve cells form loose networks in each cell layer of the body wall.lthough the invertebrate nervous system is usually much simpler than the nervous systems found in vertebrates, there is still a broad range in complexity depending on the type of invertebrate. The simplest type of nervous system is found in hydras and jellyfish (cnidarians) and is referred to as a nerve net..