What nonrespiratory air movement is due to a spastic contraction of the diaphragm while the glottis is closed?Multiple ChoiceCoughYawnHiccupSneeze

The nonrespiratory air movement that is caused by a spastic contraction of the diaphragm while the glottis is closed is known as a "Hiccup."

Explanation

Hiccups occur when the diaphragm involuntarily contracts. This contraction is sudden and is typically followed by a quick closure of the vocal cords (glottis), which produces the characteristic "hic" sound when air is suddenly inhaled.

Other options provided:

• Cough: This involves a forceful expulsion of air from the lungs and is related to clearing the airways.
• Yawn: This is an involuntary action often associated with tiredness or boredom and involves a deep inhalation followed by a slower exhalation.
• Sneeze: This is a forceful expulsion of air through the nasal cavity to clear irritants.

Thus, the correct answer is Hiccup.