what is the process where molecules move out of the digestive tract into circulation or the lymphatic system? select one: a. peristalsis b. secretion c. chemical digestion d. absorption
Food, mixed with saliva, is formed into a bolus (7) and pushed by the tongue (8) into the pharynx. During swallowing (A, B) the soft palate (9) blocks entry to the nose and the epiglottis closes. The digestive system is the organ system that includes the gastrointestinal tract (GI tract) and its accessory organs. The digestive system processes food into molecules that can be absorbed and utilized by the cells of the body.