language - communication system, speech production - the co-ordinated movement of structures of head, neck and thorax, speech - produced during the air exhalation from the lungs, phonation - vibration of the vocal chords, articulation - movement of the tongue, lips, lower jaw and pharyngeal walls, vowels - produced without undue obstruction of airflow, consonants - produced by constriction or blocking of airflow, nervous system - main regulator of speech and language, respiratory system - energy source for speech,

1.4 Speech and Language workbook activity

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