Answer :
Final answer:
The mesentery connects intestines to the abdominal wall, while the peritoneum is a serous membrane covering digestive organs. The serosa in the alimentary canal aids in keeping the digestive system in place.
Explanation:
Mesentery: The mesentery is a double folding of the peritoneum that connects the intestines to the abdominal wall. It houses lymphatic vessels and blood vessels, supporting the small and large intestines.
Peritoneum: The peritoneum is a serous membrane lining the abdominal cavity and covering most digestive organs. It consists of parietal peritoneum (lining the abdominal wall) and visceral peritoneum (covering organs).
Serosa: The serosa is a layer of visceral peritoneum over connective tissue in the abdominal region of the alimentary canal, helping hold the digestive system in place.
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