1. Gross Anatomy: This deals with the structures of the body that are visible to the naked eye. This includes things like:

* Regional anatomy: Studying the anatomy of specific regions of the body (e.g., the head, thorax, abdomen)

* Systemic anatomy: Studying the anatomy of specific organ systems (e.g., the skeletal system, the muscular system, the nervous system)

* Surface anatomy: Studying the external features of the body and their relation to underlying structures.

2. Microscopic Anatomy (Histology): This deals with the structures of the body that can only be seen with a microscope. This includes things like:

* Cytology: The study of cells

* Histology: The study of tissues

While these are the two major groups, you might also encounter other branches of anatomy like:

* Developmental anatomy: Studying the development of the body from conception to adulthood

* Comparative anatomy: Comparing the anatomy of different species

* Functional anatomy: Studying the relationship between the structure of the body and its function

* Clinical anatomy: Studying the anatomy of the body in relation to medical practice

So, while Gross and Microscopic Anatomy are the main categories, there are many branches within each, and other sub-fields of anatomy that expand our understanding of the body.