In case of modern muscle anatomy, it is clear what a muscle is. Although there is debat about very microscopic details. In my research I stumbled upon "anatomical structures" in pre-modern literature that have no overlapping connection with modern myology.
For instance I have a name "muscle", but the structure is not the same as the modern variant. The muscle is a structure that connects to the bone (without a tendon). While the nerve and/or tendon go through the muscle towards the insertion on the bone. This is different from modern conceptions.
Also the concept of a nerve, and a tendon is different in material, positioning, functioning and such like. This is interesting I think, but I have trouble describing this.
So if there are any views on this problem, or known literature, I hope to hear from you.
I think it has to do with words that refer to a certain entity.
Maybe I should use terms such as muscle morpology or architecture?
Mabye others have stumbled upon this problem in biological, medical, or anatomical research.
Thanks in advance.