Which dysfunctional pattern is most likely to cause an individual to shift from nasal to mouth breathing?

Which dysfunctional pattern is most likely to cause an individual to shift from nasal to mouth breathing?

• A. Increased cervical lordosis
• B. Decreased cervical lordosis
• C. Forward head posture
• D. Thoracic kyphosis

Answer: (A)

Excessive curvature in the neck changes how the head sits and how the jaw and tongue are positioned, which in turn influences the airway mechanics. When the cervical spine is more lordotic, the head tends to be held in a position that can alter the tongue and soft palate relationship to the nasal passages, making nasal airflow less efficient or comfortable. As nasal breathing becomes harder, the body naturally shifts toward using the mouth to breathe. Over time, this pattern becomes habitual, so mouth breathing is more likely. The other postural patterns may affect breathing in different ways, but the described neck alignment is the one most closely linked to a shift toward oral breathing because of how it changes airway space and neuromuscular resting posture of the jaw and tongue.

Excessive curvature in the neck changes how the head sits and how the jaw and tongue are positioned, which in turn influences the airway mechanics. When the cervical spine is more lordotic, the head tends to be held in a position that can alter the tongue and soft palate relationship to the nasal passages, making nasal airflow less efficient or comfortable. As nasal breathing becomes harder, the body naturally shifts toward using the mouth to breathe. Over time, this pattern becomes habitual, so mouth breathing is more likely.

The other postural patterns may affect breathing in different ways, but the described neck alignment is the one most closely linked to a shift toward oral breathing because of how it changes airway space and neuromuscular resting posture of the jaw and tongue.