Anatomy is the study of the form of living organisms. The form of an organism is the structure (shape and size) of its body and body parts. For hundreds of years, the manner in which to study anatomy has been through dissection of cadavers. The word anatomy literally means “cutting open”. The study of large structures of the body with the unaided or naked eye is referred to as gross anatomy. While gross dissection still remains the gold standard in studying anatomy, modern technologies such as x-rays, MRI’s and PET scans have heightened our abilities to study the human body. Microscopic anatomy refers to the study of small structures that cannot be seen by the unaided eye and thus requires magnification. Equipment such as light microscopy and electron microscopy is used to do so.