Stomach

• Hollow, muscular organ that continues chemical and mechanical digestion

  stomach
• Regions of stomach:

  cardia, fundus, body, antrum, and pylorus
• Pylorus divided into


  antrum and canal
• Pyloric sphincter regulates movement into


  small intestine
• Muscularis contains additional


  oblique layer - mixes food with gastric juice to become chyme
• Region where food enters stomach


  cardia
• Increases capacity of stomach


  fundus
• Connects stomach to duodenum


  pylorus
• Allows stomach to expand when full


  gastric rugae
• Mucosa contains


  gastric pits
• Gastric glands secrete


  gastric juice
• Secrete hydrochloric acid and intrinsic factor


  parietal cells
• Secrete pepsinogen


  chief cells
• Secrete mucus


  mucous neck cells
• Secrete hormones


  enteroendocrine cells