Anatomy of stomach

Basics of Stomach anatomy (for beginners)

1. Stomach Anatomy of Stomach Dr venkatesh Karthikeyan Email 4852012@ GMAIL.COM 10.12.2014

2. Worry is the Stomach’s Worst Poison! -Alfred Nobel

3. Abdominal Part of Esophagus It is 1.25 long. Enters the abdomen through the Esophageal opening of the diaphragm. It runs downwards and to the left in front of the left crus of the diaphragm, behind the left lobe of liver. It ends by opening into the cardiac end of stomach.

4. Stomach It is the widest and most distensible part of the alimentary canal between the esophagus and the duodenum.

5. Location In the upper left part of the abdomen occupying the left hypochondriac , umbilical and epigastric regions. Extends obliquely from left hypochondriac region to epigastric region. Most of the stomach lies under the cover of left coastal margin and lower ribs

6. Shape It is mostly “J” shaped. Its long axis passes downwards, forward and to the right and finally backwards and slightly upwards. It tapers from the fundus on the left side of the median plane to the narrow pylorus to the right slightly on the median plane.

7. Variations in shape of Stomach It varies greatly according to the build of an individual Volume Position of body Phase of respiration

8. Size and Capacity Length: 10 inches Capacity: At birth: 30 ml At puberty: 1 L Adults: 1.5-2 L

9. Functions of Stomach It forms a Reservoir of food.

10. It mixes food with gastric secretions to form a semifluid substance called Chyme .

11. It controls the rate of delivery of chyme into small intestine to allow proper digestion and absorption in small intestine.

12. HCl secreted by the gastric glands destroys the bacteria present in food and drink.

13. Castle ’s intrinsic factor present in gastric juice helps in absorption of Vitamin B12 in the small intestine.

14. Thank you 