Onkyo's website refers to this unit as a 7.2-channel receiver. It is clear from one of your photographs, but from no text in the review, that the height speaker terminals can be used as rear surround speaker terminals instead, for a 7.1 (or 7.2) channel setup.
In many cases, the students dissect human corpses (cadavers). Microscopic anatomy, also known as histology, is the study of cells and tissues of animals, humans and plants that are too small to been seen with the naked eye.
There are two types of anatomy: gross, or macroscopic, and microscopic. Gross anatomy deals with things that can be viewed by the unaided eye. Microscopic anatomy is the study of structures on the cellular level. There are, in turn, 3 fields of study within the topic of gross anatomy.