The beginning of the digestive tract, where food is moistened by saliva and broken down for further digestion. Interesting fact: Saliva contains the enzyme amylase, which begins the process of breaking down carbohydrates in the mouth.

Glands that produce saliva, which moistens food and facilitates swallowing. Interesting fact: A person can produce between 0.5 and 1.5 liters of saliva per day.

A tube through which food moves from the mouth to the stomach. Interesting fact: The esophagus can move food to the stomach even against gravity, thanks to peristaltic movements.

A vital organ that performs many functions, including filtering blood and producing bile for the digestion of fats. Interesting fact: The liver is the only organ capable of regeneration; a person can survive even after removing a significant portion of their liver.

A muscular sac where food is mixed with gastric juice for further digestion. Interesting fact: The human stomach produces acid strong enough to dissolve metal objects.

The site where most nutrient absorption from food into the blood takes place. a) Duodenum b) Jejunum c) Ileum Interesting fact: When stretched out, the small intestine of an adult can reach 6 meters in length.

Section of the digestive tract where water is extracted and feces are formed. a) Cecum b) Ascending colon c) Transverse colon d) Descending colon e) Sigmoid colon Interesting fact: The microflora of the large intestine helps digest components of food that were not digested in the small intestine.

The last part of the large intestine, where fecal matter accumulates before being expelled from the body. Interesting fact: The human rectum can stretch to accommodate fecal matter until the moment of defecation.

A hollow muscular organ that connects the oral and nasal cavities to the esophagus and larynx, serving as a crossroads for respiratory and digestive pathways. Interesting fact: It participates in sound production due to the presence of the epiglottis and vocal cords in the pharyngeal part of the larynx, allowing humans to speak.

This is a small sac-like organ located under the liver on the right side of the abdominal cavity. The main function of the gallbladder is to store and concentrate bile produced by the liver. Bile contains bile acids, bile pigments (bilirubin), and cholesterol. Interesting fact: Gallstones can accumulate in the gallbladder, ranging in size from a grain of sand to the size of a golf ball. About 10-15% of the adult population in developed countries suffer from this disease.

This is a mixed secretion organ located in the abdominal cavity behind the stomach, covered with a capsule with an uneven surface. It produces pancreatic juice for digestion and hormones (insulin and glucagon) for regulating blood glucose levels. Interesting fact: The pancreas has no pain receptors, so the early stages of its diseases can proceed without symptoms.