Describe two features of Galen's work that people believed up until the renaissance 2 points

Claudius Galenus was also called Galen and he was the son of Nicon who was an influential architect and builder in Pergamum (Asia Minor).

Explanation:

He discovered that blood were found in the arteries of the human body which was believed and proven to be true.

He used animals for his experiments and also discovered and thought that muscles attach to the bone in similar ways in humans and animals such as dogs which was later found as false by Vesalius.