22. Explain how the rhythm of respiration can be modified by: Stating how emotions, pain, and airway irritants influence respiration
Emotions such as crying or laughing usually cause an inhalation followed by multiple short convulsive exhalations. Pain can cause a contraction of muscles followed by a prolonged exhalation. Finally, when there are airway irritants present, it may cause one to sneeze or cough. For a cough, there is a long and deep inhalation followed by a strong exhalation through the respiratory passages to expel any blockage or irritant. For a sneeze, there is a spasmodic contraction of muscles of exhalation that expels air through the nose and mouth.