The vocal cords, also known as vocal folds, are two bands of muscle tissue located in the larynx or voice box. They play a crucial role in producing sound when we speak or sing. When air from the lungs passes through the closed vocal cords, they vibrate, creating sound waves. The pitch of the sound produced by the vocal cords can change based on their tension and length. When the cords are tightened, a higher pitch is produced, while a lower pitch results from relaxed cords. Proper care of the vocal cords is essential for maintaining a healthy voice.