Galenica (Galena) is medicine that studies the human body. The genius of antiquity: Hippocrates' book "On the Nature of Man" is considered the first scientific work in the history of mankind. It describes the anatomy, physiology and diseases of human nature. Hippocrates became the founder of a medical school (the Cos school), teaching his followers (including Galen) before his philosophy of medicine was abandoned by the Romans, who did not care about true science.
Galen lived in the Roman Empire, where he came from. He is credited with a primary role in refining and developing the anatomy and medical system of the Hippocrates, now known as the Galenic system. His anatomical structure was studied for several hundred years after his death as the primary link between medicine and anatomy. The very concept of anatomy as a science arose thanks to Galen (the careful study of the body through dissection of corpses), and not the experience of other doctors of the past. Later it became the basis of the Christian teaching about the soul and its gradations. The Christian era was an important crossroads between ancient philosophy and Western religion. Scholars of medieval Europe debated the problems between Aristotle's philosophy and the religious practices of the Christian church. It is very important to understand that science and religion are two different things. Science tries to answer questions about the world around us, while religion helps a person understand the source of his own life and the world around him.
Studying the scientific works of Galen, medical schools were passed on to subsequent generations, so that his influence in Western medicine did not diminish at all.