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.
Rinse your face with water. Apply an oil-free moisturizer to prevent skin from drying out. 1  Keep hydrogen peroxide away from your eyes to prevent burning. Use caution around your hair and eyebrows -- hydrogen peroxide can bleach hair.  Stop using hydrogen peroxide if your skin becomes dry, irritated or painful.