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.
Microscopic anatomy is subdivided into cytology (the study of cells) and histology (the study of tissues). Anatomy is closely related to physiology (study of function), biochemistry (chemical processes of living things), comparative anatomy (similarities and differences between species), and embryology (development of embryos).