Multiple choice

Hiccups are due to the activity of

  1. intercostal muscles

  2. food in air tract

  3. diaphragm

  4. inadequate oxygen in atmosphere

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Hiccups are due to the involuntary contraction of the diaphragm. Hiccups may occur individually, or they may occur in bouts. The rhythm of the hiccups, or the time between hiccups, tends to be relatively constant.