Muscle spasms can cause this.
Both the upper and lower ends of the stomach have a sphincter that regulates flow into and out of the stomach. The lower esophageal sphincter is at the top of the stomach, and the pyloric sphincter is at the lower end of the stomach.
Why would and implanted defibrillator in your heart vibrate
the more the vibration, the lower the pitch.
A little under your stomach by your bellybutton
The heartbeat you feel in your lower stomach is the abdominal aorta beating and it is perfectly normal.
lower stomach
antrum
You do not get pregnant in your stomach. If your stomach is cramping it would be something you ate or a virus. If you don't feel better in a day or so, or if you start vomiting or have severe diarrhea, see a doctor.Pregnancy occurs in your uterus, which is much lower in your abdomen than your stomach. It's down in the lower intestine area.
I assume that when you are about to be eaten by a Grizzly, you would indeed shake-up or vibrate...
By vibrating quickly, the wave would have a high frequency.
No. Your BAC would still be the same. But vomiting would reduce the alcohol levels in the stomach, so your BAC later on will be lower.
Lower part of stomach