Oblique part of cricothyroid
Pars obliqua musculi cricothyroidei · Šikmá část prstencovo-štítného svalu
Muscles
Looks like
The back, slanting part of the cricothyroid muscle, running from the cricoid ring up and back to the lower horn of the thyroid cartilage.
What it does
Slides and tilts the thyroid cartilage forward, lengthening and tightening the vocal cords for higher notes.
Keeping it well
Powered by the external laryngeal nerve, at risk in thyroid surgery. Losing high notes or quick voice fatigue afterwards needs an ENT check.