ANATOMY

Detailed explanation-1: -Regions of the digestive system can be divided into two main parts: the alimentary tract and accessory organs. The alimentary tract of the digestive system is composed of the mouth, pharynx, esophagus, stomach, small and large intestines, rectum and anus.

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: -Answer and Explanation: Two organs of the digestive system that work in unison are the pancreas and small intestine. The pancreas, an endocrine organ and gland, is known to secrete pancreatic juices that can break down food and extract some nutrients.

Detailed explanation-4: -Answer and Explanation: The following organs come in contact with food: mouth, esophagus, stomach, small and large intestine, rectum, and anus.