Ayurveda looks at the physical structure of the body in terms of the tissues of the body (the Dhatus), the membranes of the body (the Kalas) and the channels which allow substances to be transported through the body (the Srotas).  In this section we will examine the 3  Vital Essences of Prana, Tejas and Ojas, the Agni and the seven dhatus. We will examin how they are related and work to form the structure of the body. 

In Module 4 will will finish the foundation series by examining the Kalas  and the Srotas.