Which statement about a child’s chest wall is correct?

Which statement about a child’s chest wall is correct?

• A. Children are belly breathers because they rely heavily on their diaphragms.
• B. Children primarily use chest wall muscles for respiration.
• C. The diaphragm is not involved in breathing in children.
• D. Intercostal muscles are dominant during quiet breathing.

Answer: (A)

In young children, quiet breathing is driven mainly by the diaphragm, so the belly moves with each breath. The chest wall in infants is very compliant and the intercostal muscles are not the primary force for inspiration, making abdominal (diaphragmatic) breathing the dominant pattern. This is why belly breathing is the correct description. In contrast, relying on chest wall muscles for normal, quiet breathing isn’t typical in infancy; the diaphragm is involved and essential. The idea that the diaphragm isn’t involved is incorrect, and the notion that intercostal muscles dominate during quiet breathing isn’t accurate for young children, who rely more on diaphragmatic effort.

In young children, quiet breathing is driven mainly by the diaphragm, so the belly moves with each breath. The chest wall in infants is very compliant and the intercostal muscles are not the primary force for inspiration, making abdominal (diaphragmatic) breathing the dominant pattern. This is why belly breathing is the correct description.

In contrast, relying on chest wall muscles for normal, quiet breathing isn’t typical in infancy; the diaphragm is involved and essential. The idea that the diaphragm isn’t involved is incorrect, and the notion that intercostal muscles dominate during quiet breathing isn’t accurate for young children, who rely more on diaphragmatic effort.