Human anatomy is the study of the structures of the human body. An understanding of anatomy is key to the practice of medicine and other areas of health.
The word “anatomy” comes from the Greek words “ana,” meaning “up,” and “tome,” meaning “a cutting.” Traditionally, studies of anatomy have involved cutting up or dissecting, organisms.
In medicine, gross, macro, or topographical anatomy refers to the study of the biological structures that the eye can see. In other words, a person does not need a microscope to see these features.
Microscopic anatomy, also known as histology, is the study of cells and tissues of animals, humans, and plants. These subjects are too small to see without a microscope.
Physiology is the study of how living organisms function. Thus, human physiology deals specifically with the physiological attributes of the human body at various levels of the organization, i.e. from cellular to tissue and ultimately, physiology at the biological system level.