Ayurveda is a part of a Vedic system only. The sole aim is to achieve salvation i.e. true happiness for which one has to remain healthy not only in terms of physical as well as mental and spiritual health. Anatomy is just a step of a ladder because to remain healthy we need to know what we are made up of. Subtle anatomy which is better described in Vedas is more profound but to understand that level we have to know the materialistic body first. Panchmahabhuta are the components that can be easily understood and practised rather than satva or atma.