Also see user session. In telecommunication, a session is a series of interactions between two communication end points that occur during the span of a single connection.
The path of blood through the heart begins with the right atrium receiving blood, which has circulated through most of the body. This blood is relatively low in oxygen because most of it has already been delivered to different organs and tissues.
Blood Laboratory: Hemostasis > PT and PTT tests : When a body tissue is injured and begins to bleed, it initiates a sequence of clotting factor activities -the coagulation cascade- leading to the formation of a blood clot. This cascade is comprised of three pathways: extrinsic, intrinsic, and common.