Where can I find a human anatomy dataset that is easy to read / use programmatically

I am looking for a human anatomy dataset that gives me hierarchical relationships between body parts / bones / muscles.

I found datasets such as UMLS and GALEN that are large RDF / OWL datasets that give me such data, but I found that retrieving a subset of the data I want to retrieve is quite difficult - mainly due to the lack of libraries / .NET tools for OWL and lack of knowledge of this area.

I am sure that in the end I will be able to get one of them if necessary, but I was wondering if anyone knew of a smaller / simpler data set. We are prepared to pay for it if necessary, because time is critical.

Something like below, but for the whole body (we can be quite flexible here ... we just need this small / simple)

<Arm>
  <Bones>
      <Humerus/>
      <Raduius/>
      <Ulna/>
  </Bones>
  <Muscles>
   ...
  </Muscles>
</Arm>

I searched the Internet for something like this and found nothing at this level of simplicity, but with the necessary detail.

Thanks in advance.