Peristalsis.
The partially digestive food in the stomach is known by the name of Chyme.
That wavelike movement of the digestive tract is known as peristalsis.
Gut movement is also known as peristalsis which, quite literally means the wavelike muscle contractions of the digestive tract. Peristalsis occurs for two main reasons: 1) To move the food along throughout the digestive tract so as to move it closer and closer to your anus for excretion. 2) To make sure the nutrients are being absorbed from the food as well as exposing it to the digestive juices secreted from your digestive system so that it may be entirely digested.
Peristalsis also occurs in the stomach so that it can mix the food together with stomach juices and move the partially digested food into the first part of the small intestine (known as the duodenum).
The esophagus (also spelled Oesophagus) is the tube that connects the mouth and the stomach. It works through continuous wavelike muscle contractions known as peristalsis, along with downward gravity, to move food and liquids from the mouth and throat into the stomach.
Pigeons regurgitate a partially-digested mixture known as crop milk for their chicks.
peristalsis
contractions.
Roughage.
there are muscular contractions in the oesophagus which help to move the food this rhythmic movement is known as PERISTALSIS
The answer to that would most likely be cellulose or lignin. Cows can break this substance down, but not completely, and as such cannot be entirely digested in their stomachs.
the pharyngeal-esophageal phase, an involuntary process