The digestive system is a network of organs responsible for digesting food and absorbing nutrients. It includes the gastrointestinal (GI) tract and the biliary system. The GI tract consists of connected hollow organs from the mouth to the anus, while the biliary system, comprising three organs, delivers bile and enzymes to the GI tract via bile ducts.
1. Esophogus – This located in the throat near the trachea. It receives food from the mouth when swallowing. The epiglottis, a small flap, folds over the windpipe during swallowing to prevent choking. Muscular contractions called peristalsis move food through the esophagus to the stomach.
2. Tonsil – They are two rounded, fleshy masses located at the back of the throat. They filter out germs that enter through the nose or mouth to help protect the body from infections.
3. Stomach – It is a hollow organ that stores food while mixing it with enzymes. It breaks down the food into a usable form called chyme.
4. Liver – Its primary role in the digestive system is to process nutrients absorbed from the small intestine.
5. Duodenum – It is the first part of the small intestine. It connects to the stomach and aids in digesting food from the stomach.
6. Gallbladder – It stores and concentrates bile from the liver. It then releases it into the duodenum of the small intestine to help in fat digestion and absorption.
7. Ileum – It is the final segment of the small intestine. It connects to the cecum, which is the initial part of the large intestine. It continues the digestion process for food arriving from the stomach and other sections of the small intestine.
8. Tongue – It plays a crucial role in chewing and swallowing food, as well as articulating speech for clear communication.
9. Large Intestine – it is also known as the colon. It processes waste to facilitate easy and convenient bowel movements. It is a muscular tube, approximately 6 feet long, linking the small intestine to the rectum.
10. Caecum – It is a pouch or large tube-like structure located in the lower abdominal cavity. It receives undigested food material from the small intestine and is recognized as the initial part of the large intestine.
Sources:
– Cleveland Clinic. (2021, September 9). Digestive System: Function, Organs & Anatomy. Cleveland Clinic. https://my.clevelandclinic.org/health/body/7041-digestive-system
– Cleveland Clinic. (2022, July 8). Tonsils: Anatomy, Definition & Function. Cleveland Clinic. https://my.clevelandclinic.org/health/body/23459-tonsils
– National Cancer Institute. (2024). NCI Dictionary of Cancer Terms. Cancer.gov; Cancer.gov. https://www.cancer.gov/publications/dictionaries/cancer-terms/def/duodenum
– National Cancer Institute. (2024). NCI Dictionary of Cancer Terms. Cancer.gov; Cancer.gov. https://www.cancer.gov/publications/dictionaries/cancer-terms/def/ileum
– Cleveland Clinic. (2022, April 25). Tongue: Definition, Location, Anatomy & Function. Cleveland Clinic. https://my.clevelandclinic.org/health/body/22845-tongue
– Britannica. (2024). Cecum | Definition, Function, Location, & Facts | Britannica. In Encyclopædia Britannica. https://www.britannica.com/science/cecum
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