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 carries nutrients and oxygen to the muscle tissue in the body. Photo Credit Aaron Lindberg/Stockbyte/Getty Images. Blood carries nutrients and oxygen to the tissues of the body, including the muscles. A complex network of blood vessels, called arteries, takes the blood from the heart to the muscles. Then a different set of blood vessels, called veins, takes deoxygenated blood from the muscles back to the heart and gets rid of waste products that build up in the muscles.