By watching this video you can learn about the brain sand, its location in the brain, its composition, the process of its formation and its clinical significance. Timeline: 0:00 - Location pineal gland 0:25 - Corpora arenacea (brain sand) definition 0:39 - Histological slide of corpora arenacea 1:00 - Histological slide pineal gland parenchyma 1:33 - Corpora arenacea magnified view 1:42 - Location brain sand 1:55 - Composition of brain sand 2:05 - How is the brain sand formed? 3:10 - Clinical importance 3:52 - Age changes 4:21 - Benefits of decalcification