Which field of study focuses on body functions and activities?

The field of study that focuses on body functions and activities is physiology. Physiology examines how various systems within the body operate and interact, including processes such as respiration, circulation, reproduction, and movement. It provides insight into how organs and systems function in both healthy and disease states. This knowledge is crucial for professionals in the health and beauty industries, such as manicurists, as it helps them understand how the body responds to treatments and products used in their practice.

Anatomy, on the other hand, deals primarily with the structure of the body and its parts, rather than how they function. Histology focuses on the microscopic structure of tissues, while cytology looks specifically at the structure and function of cells. While these fields are related and contribute to a comprehensive understanding of human biology, it is physiology that specifically addresses body activities and functions.