The human digestive system is composed of the mouth, esophagus, stomach, and intestines; it functions to break down food into nutrients for absorption into the blood or lymph and eliminates unusable food portions as fecal matter.

Authors

• Person: Not available Organization: Britannica
  Human body | Organs, Systems, Structure, Diagram, & Facts

Sources

• Human body | Organs, Systems, Structure, Diagram, & Facts www.britannica.com Britannica via serper

Referenced by nodes (7)

• blood concept
• digestive system concept
• stomach concept
• esophagus concept
• mouth concept
• intestines concept
• lymph concept