In your body, you have only two types of bone tissue: cortical and cancellous bone. In this lesson, we will learn about the structure and function of cancellous bone, which plays a crucial role in producing blood cells and stem cells and is the primary tissue affected by osteoporosis.
balaclava (plural balaclavas) 1  A warm cap shielding the neck and head, often made out of wool. ( 2 chiefly Canada) A ski mask with holes for the eyes and, sometimes, the nose and mouth, which may be rolled up and worn like a toque or pulled over the face for greater protection.
A cravat is a form of neck cloth often worn by men. It was very fashionable in 1800s England and France and could be tied in different ways. Men's cravats can still be worn today to add formality to a wedding or other occasion.Here are the steps to make a cravat. Fasten a cravat pin to hold the longer top side of the cravat in place. 2  For a scrunch or ruche tie, pull the long end of the cravat down through the loop in the cravat's knot. 3  Make sure the knot remains somewhat loose to give it a scrunched look.