1. Name and describe the three processes that occur during the digestive process.
Mouth, stomach small intestines.
2. What are the four layers of the GI tract? Associate an illness with each of the layers. Describe the illness.
The layers are mucosa, submucosa, muscularis, and serosa. An illness for the first layer is diverticulitis, which is when the pouches in your stomach become infected and inflamed. Inflammatory bowel deisies si when the submucosa becomes inflamed. Irritable bowel syndrome is when contractions of the wall cause abdominal pains. Lastly appendicitis, which must be removed, because it is a threatening infection of the peritoneum.

Define the following vocab...
Palate: makes sure no food goes in your nose while eating.
salivary glands: gland associated with the mouth that secretes saliva.
dental carries: tooth decay that occurs when bacteria within the mouth metabolize sugar and give off acids that erode teeth.
periodontitis: inflammation of the periodontal membrane that lines tooth sockets, causing loss of bone and loosening of teeth.
pharynx: portion of the digestive track between the mouth and the esophagus, that serves as a passageway for food and air to the trachea.
esophagus: Muscular tube for moving swallowed food from the pharynx to the stomach.
glottis: opening for airflow in the larynx.
epiglottis: structure that covers the glottis during the process of swallowing.
peristalsis: wavelike contractions that propel substances along a tubular structure, such as the esophagus.
sphincters: muscle that surrounds a tube and closes or opens the tube by contracting and relaxing.
diaphragm: Dome-shaped horizontal sheet of muscle.

3. Describe the mecahanical and chemical digestion that occurs in the mouth.
It occurs when the red portion of your lips is poorly keratinized, and this allows blood to show through.
4. What ordinarily prevents food from entering the nose or entering the trachea when you swallow?
The palate.

5. What causes the burning sensation associated with heartburn?
Acid reflux
6. What is GERD? How is it different from heartburn?
Its gastroesophageal reflux disease. It’s Different from heartburn because you can also experience pain in the chest.
7. Describe two ways drugs treat GERD.
Neutralized stomach acids
Reduces acid production
8. Describe ways to avoid heartburn that do not involve drugs.
Diet and exercise, and not over eat.