Module 1: Introduction to the Human Body

1. Organization of the Human Body


The human body has often been compared to a machine. Think about common household machines, such as printers and washing machines. What do they have in common? Each machine consists of many parts, and the parts work together to perform a particular job. The human body is like a machine in these ways. It could be called the most fantastic machine on Earth. Read on to learn more about the human “machine” and its parts. See whether you agree that the human body is fantastic.

Organization of the Human Body

The basic building blocks of the human body are cells. Human cells are organized into tissues, tissues are organized into organs, and organs are organized into organ systems.