AP BIOLOGY

Detailed explanation-1: -Alimentary canal is the long digestive tract through which the food travels. This tract extends from the mouth to the anus including the organs such as oesophagus, stomach and the intestines. Liver and Pancreas are parts of the digestive system but does not constitute the alimentary canal.

Detailed explanation-2: -The alimentary tract of the digestive system is composed of the mouth, pharynx, esophagus, stomach, small and large intestines, rectum and anus. Associated with the alimentary tract are the following accessory organs: salivary glands, liver, gallbladder, and pancreas.

Detailed explanation-3: -The liver is an accessory gland that helps in the digestion of food by producing bile, which helps in the digestion of fat in the small intestine but the food does not pass through it, therefore the liver is not a part of the alimentary canal. The stomach, oesophagus and rectum are the parts of the alimentary canal.

Detailed explanation-4: -The Mouth and Oral cavity. Oesophagus. Stomach. Small intestine.

Detailed explanation-5: -Pancreas: Your pancreas is located behind your stomach and is attached to both your gall bladder and your small intestines. Among other functions, the pancreas aids in digestion by producing digestive enzymes and secreting them into the duodenum (the first segment of the small intestine).