Just like the shell of a clam, a pearl is composed of calcium carbonate (mainly aragonite or a mixture of aragonite and calcite). in minute crystalline form, which has been deposited in concentric layers. The ideal pearl is perfectly round and smooth, but many other shapes, known as baroque pearls, can occur.
Rimula is a genus of fungi in the Helotiales order. The relationship of this taxon to other taxa within the order is unknown (incertae sedis), and it has not yet been placed with certainty into any family. ^ Lumbsch TH, Huhndorf SM. (December 2007). Outline of Ascomycota â 2007.
The Uvula. The uvula is the small flap of tissue which hangs down at the back of your throat. The uvula is composed of muscle fibers as well as connective and glandular tissues. Like other soft tissue structures in the mouth, the uvula is covered by oral mucosa.our mouth is made up of more than just teeth, so good oral health goes beyond simply brushing and flossing. In addition to your teeth, your mouth is made up of gums, oral mucosa, the upper and lower jaw, the tongue, salivary glands, the uvula, and the frenulum.