How do vocal cords produce speech?

Do You Know the answer of the above Question? Tell Me Why Questions.Blogspot.Com will give you the answer of the same Question. Read and Understand them and Improve your Knowledge...

-----------------------------------------

We can speak, thanks to a slit like opening between the vocal cords called the glottis. Its size and shape change according to your activity.

When you breathe, the cords draw apart, allowing passage of air to and from the llungs. If you speak or sing, the flods draw closer together. Speech is produced when you breathe out.  The airflow through the glottis causes the vocal cords to vibrate, producing waves of sound.

The tautness of the cords determines the frequency of the vibrations and the pitch of the sound.