1. The digestive tubes running between the mouth and the anus are alimentary canals. The tubes carry out digestion and
absorption of nutrients step by step.
2. Peristalsis is rhythmic waves of contraction by the smooth muscles that help push the food along the tract.
3. The accessory organs are the salivary glands, the pancreas, the liver, and the gall bladder. Accessory glands deliver
digestive juices to the canal via ducts.
4. Once the food enters the oral cavity, a nervous reflex is triggered which causes the salivary glands to deliver saliva
to the oral cavity.
5. Salivary amylase is a digestive enzyme that hydrolyzes starch and can be found in the saliva.
6. The stomach can hold about 2 liters of food and fluid.
7. Pepsin is an enzyme that hydrolyzes proteins. When pepsin is synthesized and secreted in an inactive form, pepsinogen
8. Most enzymatic hydrolysis of the macromolecules in food occurs in the small intestine.
9. Bile is produced by the liver and aids in the digestion and absorption of fats.
10. The epiglottis and the vocal cords keep food and fluid from entering the respiratory system.
11. The five steps of digestion: movement, secretion, digestion, absorption, and elimination.