Haversian canals (also called central canals) run longitudinally through the bone and contain blood vessels and nerves which supply the bone.
Business casual: Generally means khaki pants, a plain polo shirt or a long-sleeved casual button-down oxford shirt, a V-neck sweater, sometimes a sports coat or blazer, and brown leather shoes. Loafers are a good choice, and you should wear socks.
Wear pants styles such as khakis, dress pants, trousers and corduroy pants. Jeans are not considered business casual. 1  Pleated pants and dark colors are more formal, conservative choices. 2  If you want to be on the safe side, over dressing is less frowned upon than under dressing.