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.
Light micrograph of a histologic specimen of human lung tissue stained with hematoxylin and eosin. Histology is the study of the microscopic anatomy (microanatomy) of cells and tissues of plants and animals. It is commonly performed by examining cells and tissues under a light microscope or electron microscope, the specimen having been sectioned (cut into a thin cross section with a microtome), stained, and mounted on a microscope slide.