Communicating with Coworkers. As a medical assistant, you are part of a larger health-care team. The quality of communication that you have with your coworkers is vitally important and influences the development of positive or negative work environments, as well as a team approach to patient care.
venous sinus in Medicine Expand. venous sinus n. A cavity at the caudal end of the embryonic cardiac tube in which veins from the intra- and extraembryonic circulatory arcs unite. In adults it develops into the sinuses of the venae cavae.
The walls of the dural venous sinuses are composed of dura mater lined with endothelium, a specialized layer of flattened cells found in blood vessels. They differ from other blood vessels in that they lack a full set of vessel layers (e.g. tunica media) characteristic of arteries and veins.