ATI Teas Gastrointestinal System Questions and Answers | Latest Version | 2025/2026 | Correct & Verified

ATI Teas Gastrointestinal System Questions and Answers | Latest Version | 2025/2026 | Correct & Verified Which organ is responsible for the majority of nutrient absorption in the digestive system? A. Stomach B. Small intestine C. Large intestine D. Esophagus What is the primary function of the large intestine? A. Break down proteins B. Absorb nutrients C. Absorb water and form feces D. Produce digestive enzymes Which structure connects the mouth to the stomach? A. Trachea B. Esophagus 2 C. Pharynx D. Duodenum What enzyme found in saliva begins the digestion of carbohydrates? A. Amylase B. Lipase C. Pepsin D. Lactase Which part of the digestive tract is responsible for most chemical digestion? A. Large intestine B. Esophagus C. Small intestine D. Rectum Which of the following organs produces bile? A. Liver B. Gallbladder 3 C. Pancreas D. Stomach What is the role of the gallbladder in digestion? A. Stores and releases bile B. Produces insulin C. Absorbs water D. Digests proteins Where does protein digestion begin? A. Stomach B. Mouth C. Small intestine D. Large intestine Which of the following is a function of the pancreas in the digestive system? A. Store bile B. Produce digestive enzymes 4 C. Absorb nutrients D. Break down fiber What is the function of villi in the small intestine? A. Secrete hormones B. Increase surface area for absorption