A scientific name for "the human spine" is called a "vertebrae."
Vertebrae.
Lumbago
Vertebrae = spine.
Its a Phrynosoma
The vertebral column.
Posterior thoracic.
Brown Recluse
Crotalus adamanteus
"invertebrates"
The scientific name for the process of turning writing back to front is mirror writing. In mirror writing, text is written the reverse of normal, making it appear as a mirror image of the original. This phenomenon can occur as a neurological condition or be done intentionally as an artistic choice.
Dorsalgia. Please see http://en.wikipedia.org/wiki/Back_pain
The scientific name for chrysanthemums is Chrysanthemum spp.