Galen in the 2nd century AD could be considered one of the earliest researchers who attempted to bridge the gap between basic science and clinical medicine. Galen is given initial credit for the recognition that vital organs of the body are exquisitely dependent upon the intact function of the circulatory system. The doctrines of Galenic physiology stated that blood was produced in the liver, flowed to the heart to obtain "vital spirits," and subsequently bathed the brain to gain "animal spirits." The "vital spirits" described by Galen were later disclosed to consist of oxygen. Oxygen was...
Galen in the 2nd century AD could be considered one of the earliest researchers who attempted to bridge the gap between basic science and clinical med...
