Anatomy - Pelvis & Perineum

Explanation
The peritoneum is a membrane that lines the abdominal cavity. It is a double-layered membrane that covers the organs in the abdomen and helps to protect and support them. Therefore, the statement that the abdominal cavity is lined by peritoneum is true.

Explanation
Structures that are suspended in the abdominal cavity by a mesentery and that lie between the parietal peritoneum and abdominal wall are not retroperitoneal in position. Retroperitoneal structures are located behind the peritoneum, not between the parietal peritoneum and abdominal wall. Therefore, the correct answer is False.

Explanation
Infections in the abdominal cavity can freely spread into the pelvic cavity. This is because the abdominal and pelvic cavities are connected and communicate with each other through various pathways, such as the fallopian tubes in females and the vas deferens in males. Therefore, infections can easily spread from one cavity to the other, leading to potential complications and further spread of the infection.

Explanation
As vessels pass inferior to the inguinal ligament, the external iliac artery and vein of the abdomen change their names and become the femoral artery and vein of the thigh. This is a true statement because the inguinal ligament marks the transition point where these vessels change their names.

Explanation
Abdominal pain from the foregut is referred to the epigastric region, which is the upper central part of the abdomen. Pain from the midgut is referred to the umbilical region, which is around the belly button. Pain from the hindgut is referred to the pubic region, which is the lower part of the abdomen. This statement is true because it accurately describes the referred pain patterns in these regions based on the origin of the pain in different parts of the gastrointestinal tract.