THE OPENING IN THE LOWER PART OF THE HUMAN FACE, SURROUNDED BY THE LIPS, THROUGH WHICH FOOD IS TAKEN IN AND FROM WHICH SPEECH AND OTHER SOUNDS ARE EMITTED

THE PART OF THE ALIMENTARY CANAL THAT CONNECTS THE THROAT TO THE STOMACH; THE GULLET. IN HUMANS AND OTHER VERTEBRATES IT IS A MUSCULAR TUBE LINED WITH MUCOUS MEMBRANE

A LARGE LOBED GLANDULAR ORGAN IN THE ABDOMEN OF VERTEBRATES, INVOLVED IN MANY METABOLIC PROCESSES.

THE INTERNAL ORGAN IN WHICH THE MAJOR PART OF THE DIGESTION OF FOOD OCCURS, BEING (IN HUMANS AND MANY MAMMALS) A PEAR-SHAPED ENLARGEMENT OF THE ALIMENTARY CANAL LINKING THE ESOPHAGUS TO THE SMALL INTESTINE

THE SMALL SAC-SHAPED ORGAN BENEATH THE LIVER, IN WHICH BILE IS STORED AFTER SECRETION BY THE LIVER AND BEFORE RELEASE INTO THE INTESTINE

A LARGE GLAND BEHIND THE STOMACH THAT SECRETES DIGESTIVE ENZYMES INTO THE DUODENUM. EMBEDDED IN THE PANCREAS ARE THE ISLETS OF LANGERHANS, WHICH SECRETE INTO THE BLOOD THE HORMONES INSULIN AND GLUCAGON.

THE FIRST PART OF THE SMALL INTESTINE IMMEDIATELY BEYOND THE STOMACH, LEADING TO THE JEJUNUM.

THE MIDDLE PART OF THE LARGE INTESTINE, PASSING ACROSS THE ABDOMEN FROM RIGHT TO LEFT BELOW THE STOMACH.

THE FIRST MAIN PART OF THE LARGE INTESTINE, WHICH PASSES UPWARD FROM THE CECUM ON THE RIGHT SIDE OF THE ABDOMEN.

THE THIRD PORTION OF THE SMALL INTESTINE, BETWEEN THE JEJUNUM AND THE CECUM.

THE OPENING AT THE END OF THE ALIMENTARY CANAL THROUGH WHICH SOLID WASTE MATTER LEAVES THE BODY.

THE FINAL SECTION OF THE LARGE INTESTINE, TERMINATING AT THE ANUS.

THE PART OF THE SMALL INTESTINE BETWEEN THE DUODENUM AND ILEUM.

THE S-SHAPED LAST PART OF THE LARGE INTESTINE, LEADING INTO THE RECTUM.

The organs and glands in the body that are responsible for digestion. The digestive system begins with the mouth and extends through the esophagus, stomach, small intestine, and large intestine, ending with the rectum and anus.