What is a single word for mouth, eyes, ears and nose?

These are essentially all the organs which are attached to a creature’s head.

The closest phrase I’ve come across are head sensory organs, however I was hoping there was a more formal and scientific single word to describe these.

To give this context: I’m busy programming a system class structure which I’d like to use the proper scientific names for. This should therefore be such that a nose, eyes, ears and mouth are all types of word. In this case, “face” would not work, since a nose is not a type of face.