胸鎖 きょうさ乳突 にゅうとつ すじじゃありません
kyōsa nyū totsusujijārimasen

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 胸鎖乳突筋

1. It is not the sternocleidomastoid muscle.

Negative
Polite
Terminal Form