1. These are called rugae, and enable the stomach to increase dramatically in size when it fills with food.

2. The palatal rugae helps speech recovery in patients with complete denture restoration.

3. Objective To study the effects of palatal rugae on speech recovery after restoration of complete denture.

4. Therefore it is concluded that the examination of the microcirculation of the nail rugae is helpful to diagnose nephritis.

5. Multiple ulcer and erosion, often associated with hypertrophic gastric rugae.

6. Objective:To study the correlation between the patients with ischemic apoplexy and the related data of blood rheology and the microcirculation of nail rugae .