Let me give you an example, 'Ma'am, your son's humerus and radius bones were broken in the car crash accident.' to 'Ma'am, your son's humerus and radius bones were broken in the car crash accident. What I mean is that his upper and lower left arm are broken.' (First, you confused your readers, then you provide them with simple common terms. This will create the 'ahhhh' / 'ooohhhh' effects.)
Source: http://www.pitt.edu/~anat/Neuro/Skull/Skull.htm
PS: Most common use of skeleton I came across so far is the ribs and spines (from Cervical Vertebrae to Sacrum of the back)
Source: http://simplyfabulicious.blogspot.com/2009_08_01_archive.html
PS: Apart from the well known organs like hearts, lungs, livers, kidneys etc, writers usually referring to the rest as 'entrails'.
Source: http://www.shutterstock.com/pic-52575325/stock-photo-educational-poster-for-medicine-representing-the-venous-system-of-man-and-the-names-of-its.html
PS: Personally, I don't find this part useful except referring only to its general term - 'vein'; but it could be useful to you.
So, I'm still young and learning. If you see mistakes/improvement, please do not hesitate to point it out to me. Thank you.