Digestive System

Digestive System

1. role of digestive system

   • Role of digestive system
   • to break down the food we eat
   • organs that carry out this process are known as the digestive system

2. digestive system components

   • Gastrointestinal tract
     • anus
   • pharynx
   • oral cavity
   • tongue
   • stomach
   • diaphragm
   • liver
   • gall bladder
   • duodenum
   • transverse colon
   • ascending colon
   • appendix
   • stomach
   • pancreas
   • common bile duct
   • small intestine
   • anal canal
   • common bile duct

3. main process

   • main process
   • ingestion
     • secretion
   • mixing and proplusion
   • digestion
   • Absorbtion
   • defecation

4. GI tract layers

   • serosa
   • muscle
   • submucosa
   • mucosa

5. mouth

   • taste
   • mastication
   • speech
   • chemical digestion
   • teeth
     • cutting an chewing

6. salivary glands

   • parotid
     • sublingual
     • submandibular
   • saliva contains
     • water, mineral salts, salivary amylase, mucous, lysozyme, immunoglobulins, blood clotting factors

7. digestion in the mouth

   • mechanical as a result of chewing
     • chemical
       • two enzymes released in the mouth
         • salivary amylase in the mouth
           • lingual lipase activated in starch