What is the correct sequence of the digestive process?

What is the correct sequence of the digestive process?

• A. Ingestion ➡ absorption ➡ digestion ➡ egestion
• B. Digestion ➡ Ingestion ➡ absorption ➡ egestion
• C. Absorption ➡ digestion ➡ Ingestion ➡ egestion
• D. Ingestion ➡ digestion ➡ absorption ➡ egestion

Answer: (D)

The sequence tested is the order in which food moves through the digestive system: intake first, then breakdown, then nutrient uptake, and finally waste elimination. Food must be taken in (ingestion) before any processing can happen. It is then broken down by mechanical actions like chewing and chemical enzymes and acids (digestion) to produce smaller molecules. Those molecules are then absorbed (absorption) mainly in the small intestine into the bloodstream or lymphatic system. Indigestible leftovers are expelled as feces (egestion). This order—ingestion, digestion, absorption, egestion—fits the natural flow of processes. The other options mix up this sequence: digestion cannot occur before ingestion, and absorption cannot occur before digestion.

The sequence tested is the order in which food moves through the digestive system: intake first, then breakdown, then nutrient uptake, and finally waste elimination. Food must be taken in (ingestion) before any processing can happen. It is then broken down by mechanical actions like chewing and chemical enzymes and acids (digestion) to produce smaller molecules. Those molecules are then absorbed (absorption) mainly in the small intestine into the bloodstream or lymphatic system. Indigestible leftovers are expelled as feces (egestion). This order—ingestion, digestion, absorption, egestion—fits the natural flow of processes. The other options mix up this sequence: digestion cannot occur before ingestion, and absorption cannot occur before digestion.