A good doctor, when explaining to patients, uses things like anatomical models to explain in an easy-to-understand way.
Literal
Good doctor [topic-は] patient [to-に] explain time, human-body model [object-を] use [etc.-などして], easy-to-understand explain does-for.
~などして (by doing things like) lists methods non-exhaustively. 人体模型 (anatomical model) is a specific compound. わかりやすく (easy to understand) uses the ~やすい suffix in adverbial form. ~てくれる indicates the doctor does this for the patient's benefit.