Human vocal cords are just the pole; they vibrate and move with air stimulation, but are fairly stable. The flags represent vocal membranes that primates still have.

Vocal tract size, shape dictate speech sounds Nearly 75% of variability between speakers comes from differences in mouth and throat length. Date: March 21, 2023 Source: American Institute of ...

Vocal cord paralysis may be unilateral or bilateral and may result from damage of the recurrent laryngeal nerve during past thyroid or parathyroid surgery. The left vocal cord is more commonly ...