1. Anatomy is mainly divided into gross anatomy and microscopic anatomy. The former deals with body structures that we can easily observe using the naked eye and the latter refers to those that need the use of a microscope to be observed. Furthermore, gross anatomy is subdivided into surface, regional, and systemic anatomy. Surface anatomy is for the external body, regional anatomy is for specific regions only, and systemic anatomy is for specific organ systems. On the other hand, microscopic anatomy is subdivided into cytology, the study of cells, and histology, the study of tissues. Like anatomy, physiology also has its subcomponents, mainly, systemic, cellular, and pathological physiology. Systemic physiology studies the functions of different organs or organ systems, cellular physiology covers the processes that cells undergo, and pathological physiology deals with processes that happen when we have injuries or diseases.
2. Our hands have fingers with such length, shape, and mobility for its purpose of grabbing and grasping different objects. The teeth have a hard and strong layer called enamel in order for us to chew food completely with ease.