Organs
This organ begins mechanical digestion by chewing.
What is the mouth?
This enzyme in saliva begins breaking down carbohydrates
What is amylase?
The body breaks down food to release this type of usable energy
What is ATP?
Extra glucose is stored in the liver and muscles as this substance
What is glycogen?
This is the first step of the digestive process
What is ingestion?
This muscular tube moves food to the stomach using peristalsis.
What is the esophagus?
This organ produces bile
What is the liver?
Carbohydrates are broken down into this simple sugar
What is glucose?
When glycogen stores are full, the body converts extra energy into this
What is fat?
Food moves through the digestive system using these wave‑like contractions
What is peristalsis?
This organ churns food and mixes it with acid to form chyme.
What is the stomach?
This organ stores bile until it is needed.
What is the gallbladder?
This process turns glucose into energy inside the cells
What is cellular respiration?
This type of nutrient provides long‑term energy storage
What are lipids?
This is the semi‑liquid mixture created in the stomach
What is chyme?
This long organ absorbs most nutrients into the bloodstream
What is the small intestine?
This organ releases enzymes that help digest fats, proteins, and carbs.
What is the pancreas?
This organ controls blood sugar by releasing insulin
What is the pancreas?
This hormone helps store glucose by moving it into cells
What is insulin?
Most nutrient absorption happens in this part of the small intestine
What is jejunum?
This organ absorbs water and forms solid waste.
What is the large intestine?
This acid in the stomach helps break down food and kill bacteria.
What is hydrochloric acid?
These cell structures are known as the “powerhouses” because they make energy
What are mitochondria?
This organ stores long‑term fat for insulation and energy
What is adipose tissue?
This is the final step of digestion where waste leaves the body
What is elimination?