What are Hiccups?Hiccups are involuntary spasms of the diaphragm muscles that draw air into the lungs. Hiccups occur when the diaphragm becomes irritated, causing it to contract suddenly and involuntarily. As the diaphragm contracts, the opening between the vocal cords (glottis) snaps shut, causing the hiccup sound. Hiccups are usually caused when the nerve that extends from the neck to the chest is irritated (the phrenic and vagus nerves).
They are involuntary muscles.
Heart muscles are involuntary.
From an involuntary spasm of your diaphragm
They are involuntary muscles.
yes. The smooth muscles (e.g. in the digestive tract) are involuntary.
skeletal muscles are voluntary muscles.
involuntary muscles can't control consciously, but voluntary muscles can.
yes. Smooth muscles are another name for involuntary muscles.
Which two types of muscles are involuntary?
Smooth muscles. These muscles are not striated and are involuntary.
Involuntary muscles