The digestive system is the organ system responsible for the breakdown and absorption of food. It consists of the mouth then goes to the esophagus, stomach, small intestine, large intestine, and anus.
The esophagus functions to carry food and liquid from the mouth to the stomach. It does this through the process of peristalsis, which is a wave of muscular contractions that push the food downward until it reaches the stomach.

The small intestine functions to absorb nutrients and finish the process of digestion. It is lined with mucosa of simple columnar epithelium that have villi and microvilli which increases the absorptive surface are of the intestine to better absorb nutrients.

The anus is the last part of the digestive tract which functions to help us identify when to poo and secrete our wastes and helps control the defecation of poo.

REFERENCES:
Cleveland Clinic. (n.d.). Esophagus. https://my.clevelandclinic.org/health/body/21728-esophagus#:~:text=The%20primary%20function%20of%20your,to%20your%20throat%20(pharynx).
Cleveland Clinic. (n.d.) Digestive system. https://my.clevelandclinic.org/health/body/7041-digestive-system
National Cancer Institute. (n.d.). Small & Large Intestine. https://training.seer.cancer.gov/anatomy/digestive/regions/intestine.html#:~:text=The%