Cristae
permanent folds are called plicae circulares temporary folds are called rugae.
The folds of the stomach are called rugae.
rugae It's not rugae - for stomach. Small intestine wall is plicae circulares.
The answer is quite simple. The fine folds of the brain are called "folia".
When plates slowly collide, they can form bended rock layers called folds. These folds can take various shapes such as anticlines (upward-arched folds) and synclines (downward-arched folds).
The folds on the surface of the brain are called gyri.
The fissures or the sulci are the inward folds of cerebral tissue.
The folds of the mucosa on the internal surface of the stomach are called rugae. Rugae allow the stomach to expand when it is filled with food and contract when it is empty. This helps in mixing and breaking down food during digestion.
These types of folds are called rugae, in the stomach they are the gastric rugae
When rock layers are deformed into folds or ripples, it is called deformation or folding. This can occur due to tectonic forces, such as compression or extension, causing the rocks to bend and deform.
They are called "plicae circulares"
The ribbon-like folds on the inner lining of the mitochondrial membrane are called cristae.