The process of grinding the food by the teeth is called deglutition.

Humans have gut microbes that produce cellulase to aid in cellulose digestion.

The act of swallowing is a voluntary type of propulsion.

Peristalsis in the esophageal region, just like swallowing, require conscious control.

Segmentation of the small intestine also aids in the mechanical digestion of food.

The presence of food in the stomach stimulates the production of the hormone secretin, which in turn stimulates the stomach cells to produce more gastric juice.

The stomach also absorbs some of the water, minerals, and alcohol

The fatty acids from large fat molecules are absorbed into the lacteals alongside amino acids.

A defecation reflex is being signaled as the undigested food fills the rectum.

Food is broken down into their building blocks through chemical means.

Fatty acids accumulate in the cells to form fats, proteins, and polysaccharides.

Food is being swallowed and taken in by the mouth.

Mixing of food with digestive juices is a process called churning.

Segmentation helps food to mix with digestive juices to prepare the food for further degradation.

Swallowing pushes the food from the mouth into the esophagus.

Saliva breaks down carbohydrates in the food.

Food particles are absorbed and transported into the bloodstream.

Movements in the large intestine move feces into the rectum.

The stomach performs peristalsis by relaxing its upper portion to accept and push food from the esophagus.