Development of the digestive system in the gut layers and in places mesenteries extend from the gut as double layers of peritoneum. Mesenteries provide a pathway for vessels, nerves, and lymphatics to the organs. Initially, the gut tube from the caudal end of the foregut to the end of the hindgut is suspended from the dorsal body wall by dorsal mesentery. Ventral mesentery, derived from the septum transversum, exists only in the region of the terminal part of the esophagus, the stomach, and the upper portion of the duodenum. The diaphragm divides the body cavity into the thoracic cavity and the abdominal cavity. It develops
The Hardest Part Is the Night The Hardest Part Is the Night "The Hardest Part Is the Night" is a single by American rock band Bon Jovi. It is taken from their second album, "7800° Fahrenheit". It is notable for being the first Bon Jovi single to be released in the UK, where it charted at #68. It was the only single from the album not to chart in the U.S. Among Bon Jovi's early songs, "The Hardest Part is the Night" is the one that expresses most clearly Jon Bon Jovi's concerns with working class issues and the struggles of the underdog, a theme that