How muscles are used to speak one word?

Answer 1

When we speak a word, the brain sends signals to the muscles involved in speech production, including the diaphragm, vocal cords, tongue, lips, and jaw. The diaphragm contracts to push air out of the lungs, which passes through the vocal cords to create sound. The tongue, lips, and jaw then move to shape the sound into recognizable speech. This coordinated muscle activity allows us to articulate and produce the specific word we intend to say.

Answer 2

Normal human speech is produced with pulmonary pressure provided by the lungs which creates phonation in the glottis in the larynx that then is modified by the vocal tract into different vowels and consonants.

The lung (the pump) must produce adequate airflow and air pressure to vibrate vocal folds (this air pressure is the fuel of the voice). The vocal folds (vocal cords) are a vibrating valve that chops up the airflow from the lungs into audible pulses that form the laryngeal sound source. The muscles of the larynx adjust the length and tension of the vocal folds to 'fine tune' pitch and tone. The articulators (the parts of the vocal tract above the larynx consisting of tongue, palate, cheek, lips, etc.) articulate and filter the sound emanating from the larynx and to some degree can interact with the laryngeal airflow to strengthen it or weaken it as a sound source.