When covered by a single layer of mesothelial cells, it is called the serosa. Small Intestine The mucosa of the small intestine is characterized by mucosal folds (plicae circulares, or valves of Kerckring) and villi. The mucosal folds are composed of mucosa and submucosa.hen covered by a single layer of mesothelial cells, it is called the serosa. Small Intestine The mucosa of the small intestine is characterized by mucosal folds (plicae circulares, or valves of Kerckring) and villi. The mucosal folds are composed of mucosa and submucosa.
The Big Chill. Tired eyes wake up fast when you give them a dose of cold. If youâre feeling brave and want the quickest relief, dunk your face into a large bowl filled with ice water. For a less bracing experience, soak a washcloth in cold water, then lie down with the cloth over your eyes for 10 to 15 minutes.
Cleansing Your Skin. 1  1. Wash your face twice a day. Your skin could be dull because it's covered in dead skin, and it may have accumulated dirt and oil over the course of the day or night. 2  2. Exfoliate. Exfoliation removes dead skin cells and smooths out your skin for a brighter appearance. 3  3. Choose a facial moisturizer for your skin type.