I wanted to know if you can tell me what software was used to generate these drawings:
Graphic Design Stack Exchange is a question and answer site for Graphic Design professionals, students, and enthusiasts. It only takes a minute to sign up.Sign up to join this community
Please edit the question to limit it to a specific problem with enough detail to identify an adequate answer. Avoid asking multiple distinct questions at once. See the How to Ask page for help clarifying this question. If this question can be reworded to fit the rules in the help center, please edit the question.
It is hard to tell but a general idea is:
The first one is done in a vector based program (Ilustrator, Corel Draw, Inkscape, Draw Plus. It can be done even in Power point.
The second is a 3D render, with a special material aplied on which depends on the angle of the surface respect of the camera That is called Fresnel. There are a ton of programs, but a free one is Blender.
Another free resource is Daz3D which give you some 3D models for free, but also has payed models, like thoose internal organs.
For the render you can export them and use a program like Blender, again, or Kerkythea.