A weakened and enlarged aorta may allow some blood to leak back into the heart during each heartbeat; this condition is called aortic regurgitation.
Aortic valve-The valve between the heart's left ventricle and ascending aorta that prevents regurgitation of blood back into the left ventricle.
In some extreme cases, when there is a lot of stomach acid regurgitation, the child's teeth will show enamel erosion.
Valves that do not close properly may cause blood to leak back through the valve (called valve regurgitation).
Aortic regurgitation occasionally causes shortness of breath during normal activity.
Bees create honey from the nectar in flowers through a process of regurgitation.
Gastroesophogeal reflux disease (GERD) is a condition that causes a regurgitation of the stomach acid back into the esophagus.
The crop is followed by a proventriculus which, in the higher Hymenoptera, forms the so-called " honey stomach," by the contraction of whose walls the solid and liquid food can be separated, passed on into the digestive stomach, or held in the crop ready for regurgitation into the mouth.