Question

Upon completion of a colon anastamosis, the defect in the _____ must be closed to prevent postoperative obstruction.

(a) Mesentery
(b) Omentum
(c) Peritoneum
(d) Retroperitoneum

Answer 1

The defect in the mesentery must be closed after a colon anastomosis to prevent postoperative obstruction, as it holds the intestines in place and prevents twisting.

Step-by-step explanation:

Upon completion of colon anastomosis, the defect in the mesentery must be closed to prevent postoperative obstruction. The mesentery is a double layer of peritoneum that attaches portions of the intestine to the abdominal wall, ensuring proper alignment and preventing volvulus, which is the twisting of the intestine leading to obstruction. Other terms relevant to the anatomy of the gastrointestinal tract involve the omentum, which is a double layer of peritoneum that extends from the stomach to cover the abdominal organs, and the peritoneum, which is the serous membrane lining the abdominal cavity.