scalene vs scalene muscle

scalene

adj
  • Of or pertaining to the scalene muscle. 

  • Having sides all unequal in length. 

scalene muscle

noun
  • Any of usually three deeply situated muscles on each side of the neck of which each extends from the transverse processes of two or more cervical vertebrae to the first or second rib. 

How often have the words scalene and scalene muscle occurred in a corpus of books? (source: Google Ngram Viewer )