Your gut synthesizes a host of small molecules which can directly signal the brain. One of these, called ghrelin, is synthesized primarily in the stomach, and is produced when the stomach is empty. Ghrelin released into the blood ultimately finds its way into the brain, and crosses the blood-brain barrier to reach a part of the brain called the hypothalamus. Now, the hypothalamus has two interesting types of cells.
History >> Ancient China. The Shang Dynasty was the first Chinese dynasty with written records. The Shang ruled from around 1600 BC to 1046 BC. Some historians consider the Shang to be the first Chinese Dynasty. Other historians consider it to be the second dynasty, coming after the legendary Xia Dynasty. History.
The Zhou Dynasty (1045â221 BC). The Zhou dynasty era lasted 800 years until the end of China's bronze age. It was the longest lasting dynasty, but the accounts say that the ruling clan slowly lost power until they became ceremonial figureheads.