When the bladder is empty it's lining is thrown into folds called rugae. It allows the stomach and other tissues to expand when needed.
When the bladder is empty, it's inner wall has many folds, as it fills with urine, the wall becomes smoother. At the same time, the superior surface of the bladder expands upward into a dome.
The endothelial lining of an artery cannot contract, so when an artery constricts, its endothelium is thrown into folds that give arterial sections a pleated appearance.Arteries are more resilient: When stretched, they keep their shape and elongate, and when released, they snap back.
The folds that form in the gastric mucosa when the stomach is empty are called rugae. These are temporary folds that allow for expansion of the stomach when food is consumed. Rugae help to increase the surface area of the stomach lining for better absorption of nutrients.
The ribbon-like folds on the inner lining of the mitochondrial membrane are called cristae.
Stomach is lined by various folds of mucous membrane and muscle tissue. These folds are termed as Rugae. This results in the characteristic appearance of stomach on the endoscopy.
Rugae are actually folds in the mucosa of the stomach and urinary bladder, not the kidney. Rugae in the stomach help with its expansion when it is full, while rugae in the bladder allow for stretching as it fills with urine.
The ribbon-like folds on the inner lining of the mitochondrial membrane are called cristae.
Rugae
The lining of a pig stomach has multiple folds called rugae. These folds churn and mix the food with the digestive juices. They also allow the stomach to stretch without rupturing the lining.
Rugae
The folds are called rugae and they are specialised mucosa designed to withstand abrasive forces of masticated food
Peritoneal folds are folds in the peritoneum, which is the membrane lining the abdominal cavity. These folds help to support and compartmentalize the abdominal organs, such as the stomach, intestines, and liver. They can also play a role in reducing friction between organs during movement.