Digestive system - stomach, Biology

Assignment Help:

STOMACH

  1. It is wide, J-shaped, placed obliquely on left side in upper abdominal cavity so left kidney is slightly down ward.
  2. It is 30 cm, long and 15 cm. wide.
  3. It has greater curvature on lower side and lesser curvature on upper side.
  4. Stomach is differentiated into 3 parts -

         Cardiac - Towards oesophagus.     Fundic - Middle main part.         Pyloric - Towards duodenum.

  1. Between oesophagus and cardiac stomach, cardiac valve or cardia present.
  2. Between pyloric stomach and duodenum, pyloric valve or pylorus present.
  3. Both valves do not allow regurgitation i.e. back flow of food to buccal cavity.
  4. In histology of stomach serosa, musculature, sub mucosa & mucosa present.
  5. Serosa is outer layer made up of fibres and peritonium.
  6. In musles longitudianl, circular and oblique muscles present.
  7. In sub mucosa, muscularis mucosa present differentiated into outer longidutinal and inner circular muscles.
  8. Sub mucosa also consits of mast cells, fibroblast and histocytes.
  9. Mucosa forms folds as rugae that is converted into gestric glands.
  10. Open into lumen by gastric pits. In each gland body and neck 2 parts and clear.
  11. Goblet cells present in neck only to secrete mucous.
  12. Body is made up of chief cells or zymogenic cells to secrete enzymes.
  13. In body few oxyntic cells or pariatal cells present to secrete HCl.
  14. Argentoflin cells are also noted, perhaps endocrine in nature.
  15. In Ruminent (cattle, goat, sheep, camel) Compound stomach present having Rumen. (largest pouch), reticulum (honey comb), omassum, (absent in camel & deer) and abomasum.

Related Discussions:- Digestive system - stomach

Nutrition, Nutrition, Feeding, Digestion All organisms require a fairl...

Nutrition, Feeding, Digestion All organisms require a fairly steady supply of nutrient materials from the environment to obtain energy in order to stay alive. The animals are

Explain the complications of burns, Explain the Complications of Burns? ...

Explain the Complications of Burns? Most minor burns are superficial and do not cause complications. However, deep second-degree and third-degree burns swell and take more time

Infective endocarditis, Infective Endocarditis   It  is a term used to ...

Infective Endocarditis   It  is a term used to include subacute bacterial endocarditis as well as infection caused by viruses  and fungi.  The causative organisms responsibl

Can the heat capacity of water be taken small or large, Q. Can the heat cap...

Q. Can the heat capacity of water be taken small or large ? What is the biological importance of that characteristic? Ans. From Thermology it is define that the quantit

Define the uremia and nitrogen disposal, Define the Uremia and Nitrogen Dis...

Define the Uremia and Nitrogen Disposal? In animals, faecal and renal nitrogen were enhanced and decreased uremia was seen in normal and nephrectomised animals. The mechanisms

How can amine groups be classified, How can amine groups be classified? ...

How can amine groups be classified? Amines can be classify into primary amines, those to which one -R (variable radical) is attached to a -NH2, secondary amines, those where on

What is the bone matrix, Q. What is the bone matrix? What are its main comp...

Q. What is the bone matrix? What are its main components? Bone matrix is the content that fills the intercellular space of the osseous tissue the bone matrix is made of mineral

Protozoa., what is .groups of protozoa?

what is .groups of protozoa?

Pathophysiology of tricuspid regurgitation, Q. Pathophysiology of Tricuspid...

Q. Pathophysiology of Tricuspid regurgitation? Tricuspid regurgitation is associated with prominent venous filling waves and elevated right atrial venous pressures. Hepatic and

Why that property of water is important to life, Choose one property of wat...

Choose one property of water and explain why that property is important to life.

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd