HUMAN NUTRITION

Detailed explanation-1: -the accessory organ of digestive system include teeth, tongue gallbladder, liver etc. the question is which is NOT an accessory organ, and the answer is teeth.

Detailed explanation-2: -The gastrointestinal tract consists of the oral cavity, pharynx, esophagus, stomach, small intestine, and large intestine. The accessory organs are the teeth, tongue, and glandular organs such as salivary glands, liver, gallbladder, and pancreas.

Detailed explanation-3: -Accessory organs are organs which are not part of the digestive system; however, they aid in the digestion process by performing many secondary functions. Pancreas, gall bladder and liver are the three accessory organs in digestive system.

Detailed explanation-4: -The spleen is not part of the digestive system, however, is connected to the blood vessels of both the stomach and the pancreas.

Detailed explanation-5: -Answer and Explanation: The correct answer is option (a) Stomach.