What anatomical structures are involved in communication?

The respiratory and articulatory systems are crucial anatomical structures involved in communication. The respiratory system is responsible for supplying the airflow that is essential for producing sound, as it provides the foundation for speech by controlling breath support. When we exhale, the airflow through the vocal cords allows for the vibration needed to create vocal sounds.

On the other hand, the articulatory system includes structures such as the tongue, lips, palate, and teeth, which shape the sounds produced by the vocal cords into recognizable speech. This combination of respiratory support and precise articulation is what enables effective communication.

The other choices do not encompass the primary anatomical systems directly related to the mechanics of speech. While the heart and lungs play roles in overall health and function, they are not the primary structures involved in speech production. The digestive system is unrelated to communication, as it focuses on breaking down food rather than producing sound. Similarly, the circulatory system, while vital for overall body function, does not directly contribute to the processes of speech and communication. Thus, the respiratory and articulatory systems are the most relevant to understanding how communication occurs.