DIGESTIVE SYSTEM

DIGESTIVE SYSTEM

1. STOMACH

   • Is a muscular organ located on the left side of the upper abdomen
     • LAYERS
       • Mucosa
       • Submucosa
       • Muscularis externa
         • *oblique layer, circular layer,longitudinal layer
       • Serosa
     • contain 1-2 liters of food and liquid during a meal, maximum capacity 3-4 liters
       • Produces and secretes several important substances to control the digestion of food.

2. ESOPHAGUS

   • Moves food through peristalsis since the mouth until the stomach
   • The upper esophageal sphincter (UES) permits the pass of the food through all of the esophagus
   • The lower esophageal sphincter (LES) permits the pass of the food to the stomach

3. SMALL INTESTINE

   • Breaks down food into
     • waste
     • nutrients
       • proteins, fats
   • The principal function is the absorption of the important nutrients that body needs

4. LARGE INTESTINE

   • Is the final section of the gastrointestinal tract that performs the vital task of absorbing water and vitamins while converting digested food into feces