Which of the following is not a permanent mucosal fold?
Spiral valve of heister
Gastric rugae
Plica semilunaris
Transverse rectal fold
The gastric folds (or gastric rugae) may be seen during esophagogastroduodenoscopy or in radiological studies. They provide the stomach with increased surface area for nutrient absorption . image ref - britannica.com
Abdomen and pelvis