What Is The Physiological Mechanism Behind Hiccupping?

What Is The Physiological Mechanism Behind Hiccupping? A hiccup is not simply a twitch of the diaphragm but a complex motor act. During one, the diaphragm and the complete set of inspiratory muscles (intercostal muscles, neck muscles and others) make a sudden, very strong, contraction. The expiratory muscles are also strongly inhibited. What is the

Are Hiccups Caused By Muscle Spasms?

Are Hiccups Caused By Muscle Spasms? Hiccups are caused by involuntary contractions of your diaphragm — the muscle that separates your chest from your abdomen and plays an important role in breathing. This involuntary contraction causes your vocal cords to close very briefly, which produces the characteristic sound of a hiccup. Are hiccups diaphragm spasms?