The word "Mesosigmoid" is a medical term that refers to the portion of the large intestine (colon) that connects the sigmoid colon to the descending colon. Its spelling is phonetically transcribed as /ˌmɛsəʊˈsɪɡmɔɪd/, with the emphasis on the second syllable. The prefix "meso-" means middle, and the suffix "-sigmoid" refers to the shape of the colon. This word is commonly used in medical literature to describe the anatomical position and function of this specific part of the colon.
Mesosigmoid refers to a specific anatomical feature found within the human digestive system. It is a term used to describe the portion of the sigmoid colon that is suspended by a fold of peritoneum known as the sigmoid mesocolon. The sigmoid colon is one of the four major segments of the large intestine, responsible for further digestion, absorption of water, and the elimination of waste.
The mesosigmoid is essentially a double-layered extension of the peritoneum that connects the sigmoid colon to the posterior abdominal wall. It provides a supportive structure for the sigmoid colon, holding it in place within the abdominal cavity. This attachment allows for mobility and flexibility of the sigmoid colon, enabling it to move and adjust based on the volume of its contents.
The mesosigmoid contains blood vessels, lymph nodes, and nerves that supply and innervate the sigmoid colon. These structures play crucial roles in maintaining the overall function and vitality of the sigmoid colon.
Understanding the anatomy of the mesosigmoid is important in the context of surgical interventions. Surgeons must be mindful of the extent and position of the mesosigmoid during procedures such as sigmoidectomy, a surgical removal of the sigmoid colon. Accurate identification and handling of the mesosigmoid help minimize complications and ensure successful outcomes.
The mesocolon of the sigmoid flexure.
A practical medical dictionary. By Stedman, Thomas Lathrop. Published 1920.
The term "mesosigmoid" is derived from two roots: "meso-" and "sigmoid".
1. "Meso-" comes from the Greek word "mesos", meaning "middle" or "in the middle of". It is often used in anatomy to refer to an organ or structure that is located in the middle of something. In this case, "meso-" specifically refers to the mesentery, a fold of tissue that attaches the sigmoid colon to the posterior abdominal wall.
2. "Sigmoid" comes from the Greek word "sigmoeidēs", meaning "like the letter sigma (Σ)". The sigmoid colon is a part of the large intestine that follows an S-shaped curve, resembling the Greek letter sigma (Σ), hence the name "sigmoid".