Digestive System

• It is the body metabolism

  • Digestion (breakdown of ingested food)
  • Absorption (passage of nutrients into the blood)
  • Metabolism (production of cellular energy or adenosine triphosphate or ATP)
• True or False: The processes of the mouth are:

  • For the mastication of food,
  • Mixing masticated food with saliva,
  • Initiation of swallowing by the tongue, and
  • Allowing for the sense of taste.

  
  

  True
• Peristalsis is a series of involuntary muscle contractions that move food through your digestive system.
• TRUE OR FALSE: Food is propelled to the esophagus by two muscle layers - Longitudinal inner layer & Circular outer layer.

  
  

  True
• TRUE OR FALSE: The esophagus runs from pharynx to stomach through the diaphragm

  True
• The stomach is located on the left side of the abdominal cavity.
• TRUE OR FALSE: Food enters at the cardioesophageal sphincter.

  True
• Identify the regions of the stomach

  A) Fundus

  B) Body

  C) Cardia

  D) Pylorus

  E) Antrum

  
• Is the internal folds/ridges of the mucosa.

  
  

  Rugae
• Identify the external regions of the stomach

  • Lesser curvature
  • Greater curvature

  Hint: These terms describe the inward curving sides of the stomach wall.
• This attaches the liver to the lesser curvature.

  
  

  Lesser omentum
• This attaches the greater curvature to the posterior body wall.

  Greater omentum
• TRUE OR FALSE: The stomach acts as a storage tank for food.

  
  

  True
• TRUE OR FALSE: The stomach serves as a site for food breakdown.

  True
• TRUE OR FALSE: The stomach delivers chyme (processed food) to the small intestine.

  
  

  True
• What type of epithelial tissue is mucosa of the stomach?

  Simple columnar epithelium
• Mucosa of the stomach that produce a sticky alkaline mucus.

  Mucous neck cells
• A specialized cells embedded within the mucosa layer of the stomach that secrete gastric juice is called gastric glands.