One reason that many people have difficulty with using the term "reflex" is that the term has at least two very different meanings. The Descartes/Hall tradition uses the term to indicate behavior that is rigid, simple, and occurs without volition.

Pavlov/Skinner use the term to mean a lawful or systematic relationship. They do not worry about simple vs complex.  They do not worry whether it occurred with awareness or not.

How is the term used in your area of interest? Find a use of the term "reflex" in your area. Describe how it is used or defined and explain whether it is in the Descartes/Hall or Pavlov/Skinner tradition.

(I have seen the term defined as both without any indication that the definitions did not coincide.)