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.
Gross anatomy (or macroscopic anatomy) is the study of structures of the human body that are observable with the naked eye or without the use of a microscope. Microscopic anatomy, which is usually either histology or cytology, is the study of tissues or cells which requires the use of a microscope to make out features/structures. The word gross in the term gross anatomy is used to indicate that which is large and not that which someone might find repulsive or disgusting.