Where does “päänkiertäjälihas” come from?

päänkiertäjälihas (Finnish) comes from Finnish kiertäjä, from Finnish jä, from Proto-Finno-Ugric *ja, from Proto-Germanic jahw, from Proto-Germanic -hw, from Proto-Germanic -hwe, from Proto-Indo-European -kʷe — and; Forms distributives from interrogatives.

Ancestry of “päänkiertäjälihas”, step by step

päänkiertäjälihas traces back through 3 separate lines of ancestry.

via Finnish kiertäjä

StepLanguageWordMeaning
1Finnishkiertäjä"agent noun of the verb" kiertää
2Finnishice
3Proto-Finno-Ugric*ja
4Proto-Germanicjahwand, also
5Proto-Germanic-hwand; Forms distributives from interrogatives
6Proto-Germanic-hwe
7Proto-Indo-European-kʷeand; Forms distributives from interrogatives

via Finnish lihas

StepLanguageWordMeaning
1Finnishlihasmuscle
2Finnish-sForms ordinal numbers from cardinal numbers, or...
3Proto-Finnic-nciForms ordinal numbers from the corresponding...
4Proto-Uralic-mte

via Finnish pää

StepLanguageWordMeaning
1Finnishpäähead; end, tip
2Proto-Finnicpäähead
3Proto-Uralicpäŋehead
Every word from Proto-Indo-European -kʷeEvery word from Proto-Germanic -hwEvery word from Proto-Germanic jahw