Which part is responsible for hiccups?

The diaphragm is the part responsible for hiccups.

Hiccups are caused by repeated, involuntary spasms of the diaphragm. Here's a breakdown of how it works:

• The diaphragm is a muscle located between your chest and abdomen. It plays a crucial role in breathing.
• When a hiccup occurs, the diaphragm contracts suddenly. This is an involuntary spasm that you cannot control.
• The spasm of the diaphragm forces air into the lungs rapidly.
• As air rushes in, your vocal cords close briefly, which produces the characteristic "hic" sound.

In summary, the diaphragm's involuntary spasms are the primary cause of hiccups.