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.
The study of the microscopic structure of the body. All healthy tissues are identifiable microscopically and a knowledge of normal histology is an essential basis for the recognition of the specific microscopic changes occurring in disease. The microscopic study of diseased tissue and the identification of diseases by this means is called histopathology.