He wrote _On the Anatomy of the Veins and Arteries_, _On Medical Experience_, and _
He wrote _On the Anatomy of the Veins and Arteries_, _On Medical Experience_, and _On the Use of the Bodily Parts in the Human Body_, which was actually based on dissections of monkeys. He believed that blood originates in the liver and passes through pores from the right ventricle to the left, and showed by experiment that arteries contain blood. He gave public lectures and dissections as court physician to Marcus Aurelius and his influence dominated European medicine until the sixteenth century. FTP name this second century Greek founder of experimental physiology.
He wrote _On the Anatomy of the Veins and Arteries_, _On Medical Experience_, and _
Claudius {Galen} or Claudius {Galenus}