Chyme
After a mouthful of food has been swallowed, it is called the bolus. The bolus travels down the esophagus through a process called peristalsis, which involves coordinated muscle contractions. Once it reaches the stomach, the food is mixed with gastric juices and further broken down for digestion.
Gastric juice
spincters
Food mixed with gastric juices to form a semi-liquid substance is called chyme. This process occurs in the stomach, where the acidic gastric juices, primarily hydrochloric acid and digestive enzymes, break down food into smaller particles. Chyme then gradually moves into the small intestine for further digestion and nutrient absorption.
The mouth and the stomach help to break down food mechanically. In the mouth, food is chewed and mixed with saliva to form a bolus. In the stomach, muscles contract to churn and mix the food with gastric juices to form chyme.
During deglutition, the bolus is propelled down the esophagus into the stomach by a series of coordinated muscle contractions called peristalsis. Once in the stomach, the bolus mixes with gastric juices and is broken down further through mechanical churning and chemical digestion.
The mouth is to bolus as the stomach is to chyme. In the digestive process, the mouth prepares food into a soft mass called a bolus, which is then swallowed. Once the bolus reaches the stomach, it is mixed with digestive juices and broken down into a semi-liquid substance known as chyme before moving into the small intestine.
No, food is not mashed and mixed with digestive juices in the pharynx. The pharynx is primarily a passageway for food and air, where swallowing occurs, but it does not play a role in digestion. The actual mixing and breakdown of food with digestive juices occur in the stomach, where gastric juices aid in digestion.
Chyme
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The stomach has gastric juices in it.
The stomach contains gastric acids to help break down foods.