What is the food called when it enters the small intestine ?

Question

Accepted Answer

The correct option is (1):
Chyme is the scientifically correct term for the semi-fluid, pulpy mass of partially digested food that leaves the stomach and enters the small intestine (duodenum). This highly acidic mixture is formed after the stomach's mechanical churning (peristalsis) and the chemical action of gastric juices, primarily hydrochloric acid and the enzyme pepsin, break down the solid food. The pyloric sphincter carefully controls the slow, measured release of this chyme into the duodenum, where it mixes with bile from the liver and digestive enzymes from the pancreas to continue the final stages of nutrient breakdown and absorption.

The incorrect option is (2):
The term 'Bolus' refers to the moist, rounded mass of food that has been chewed and mixed with saliva in the mouth. The bolus is the form in which food is swallowed and travels down the esophagus. It is the precursor to chyme, as it is the bolus that enters the stomach and is subsequently acted upon by the gastric juices and muscular contractions to be converted into chyme. By the time the mass reaches the small intestine, it has already transitioned from a bolus into chyme.

The incorrect option is (3):
A 'Buffer' is a chemical substance, not a physical name for the food mass. In the digestive system, a crucial buffer is sodium bicarbonate, which is secreted into the small intestine by the pancreas. The function of this buffer is to quickly and safely neutralize the high acidity of the arriving chyme. This neutralization is essential to protect the intestinal lining and create the appropriate, slightly alkaline environment required for the digestive enzymes released by the pancreas to work effectively.

The incorrect option is (4):
The statement "All options are wrong" is incorrect because "Chyme" is the precise and universally accepted biological term for the contents that pass from the stomach into the small intestine. This term accurately describes the specific composition and physical state of the food mass at that exact point in the digestive journey, making Option 1 the correct choice.