bolus

Examples of bolus in the following topics:

• Organs of the Digestive System

  • When we mix up food with saliva, the resulting mushy wad is called a bolus.
  • The bolus gets swallowed, and there begins its journey through the upper gastrointestinal tract.
  • As we swallow, the bolus moves down our esophagus, from pharynx to stomach, through waves of muscle movement known as peristalsis.
  • Next the bolus reaches the stomach itself.
  • Here our bolus gets mixed with digestive acids, furthering breakdown, and turning the bolus material into a slimy mess called chyme.

• Processes and Functions of the Digestive System

  • Once food is moistened and rolled and ready to swallow, it is known as a bolus.
  • Swallowing occurs when the muscles in your tongue and mouth move the bolus into your pharynx.
  • Waves of muscle movement, called peristalsis, move the bolus down to the stomach.
  • Once the bolus reaches the stomach, gastric juices mix with the partially digested food and continue the breakdown process.
  • The bolus is converted into a slimy material called chyme.

• Digestive System: Mouth and Stomach

  • The chewing and wetting action provided by the teeth and saliva shape the food into a mass called the bolus for swallowing.
  • The tongue aids in swallowing by moving the bolus from the mouth into the pharynx.
  • With the help of the tongue, the resulting bolus is moved into the esophagus by swallowing.

• The Rumen and Ruminant Animals

  • Solids are formed into a bolus, called "cud," in the rumen and the solid cud is regurgitated back up to the mouth where it is chewed a second time, and returned to the reticulorumen to repeat the process.

• Esophagus

  • In much of the gastrointestinal tract, smooth muscles contract in sequence to produce a peristaltic wave which forces a ball of food (called a bolus) from the pharynx to the stomach.

• Ingestion

  • Once in the mouth, the teeth, saliva, and tongue play important roles in mastication (preparing the food into bolus).

• Digestion in the Mouth, Pharynx, and Esophagus

  • It also contains mucus, a glycoprotein, that helps soften the food and form it into a bolus.
  • The reflex is initiated by touch receptors in the pharynx as the bolus of food is pushed to the back of the mouth.

• Mouth

  • Saliva keeps the mouth moist and lubricates the food, helping the tongue form the food into a soft wad, called a bolus.

• Adjustments of the Infant at Birth

  • If the blood glucose is still low, then an intravenous (IV) bolus of glucose may be delivered, with continuous infusion if necessary.