micro anatomy of stomach small intestine large intestine n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Micro-Anatomy of Stomach, Small Intestine & Large Intestine PowerPoint Presentation
Download Presentation
Micro-Anatomy of Stomach, Small Intestine & Large Intestine

Loading in 2 Seconds...

play fullscreen
1 / 7

Micro-Anatomy of Stomach, Small Intestine & Large Intestine - PowerPoint PPT Presentation


  • 216 Views
  • Uploaded on

Micro-Anatomy of Stomach, Small Intestine & Large Intestine. The Stomach. Mucosa & Sub-mucosa – Simple Columnar Glandular epithelium Mucosa contains gastric pits (known as cardiac & pyloric glands in the cardiac & pyloric areas respectfully)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Micro-Anatomy of Stomach, Small Intestine & Large Intestine' - sook


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide2

The Stomach

  • Mucosa & Sub-mucosa – Simple Columnar Glandular epithelium
  • Mucosa contains gastric pits (known as cardiac & pyloric glands in the cardiac & pyloric areas respectfully)
  • Gastric pits are lined with the same columnar epithelium that divide and migrate upwards to replace the cells damaged by acid
gastric glands
Gastric Glands

Contain:

  • Mucous Cells – Which produce a protective alkaline mucus
  • Regenerative stem cells – found in the base of the pit, replace gastric surface cells
  • Parietal Cells – Upper half of the gland, secrete HCL and intrinsic factor
  • Chief Cells – secrete pepsinogen
  • Enteroendocrine cells – secrete hormones that regulate digestion
small intestine
Small Intestine
  • Contains Circular Folds in the Muscle Layers
  • Villi (Largest in duodenum, become smaller also intestinal tract)
  • Each villus is covered with mucus – secreting goblet cells and absorptive cells
  • Each villus contains an arteriole, a capillary network, a venule, a lymphatic capillary – lacteal
small intestine1
Small Intestine
  • Each villus has a fuzzy brush border of microvilli to increase absorption
  • Brush border enzymes are located here
small intestine2
Small Intestine
  • Intestinal crypts – floor of small intestine
  • Contain absorptive & goblet cells and dividing

stem cells

  • Paneth cells also located in the crypt secrete

lysozyme, phospholipase & defensins

large intestine
Large Intestine
  • Consists of simple columnar epithelium
  • Except lower half of anal canal which his stratified squamous epithelium
  • There are no circular folds
  • There are no villi or microvilli
  • There are intestinal crypts – the only significant secretion is mucus