Notesale: Turn your study into money

Document Preview

Extracts from the notes are below, to see the PDF you'll receive please use the links above

---

FOOD DIGESTION PROCESS
IN
STOMACH,
SMALL
INTESTINE
AND
LARGE
INTESTINE

DIGESTION PROCEDURE

Stomach, Small Intestine,
Large Intestine,

STOMACH
 Stomach

is a dilated part of alimentary

canal
...

Stomach has two main portions
 Cardiac portion
 Pyloric portion
Stomach has two sphincters
 Cardiac sphincter
 Pyloric sphincter

Structure of stomach

WHAT HAPPENS WHEN FOOD ENTER IN
STOMACH

1
...

Gastric glands produced gastric juice
...


HCl convert inactive pepsinogen into active
pepsin
...




Pepsinogen is protein digesting enzyme
...
CHURNING AND MELTING
Food is further broken apart through a process of
churning
...

 The churning action also produces heat which
helps to melt the lipid content of food
...

 The pyloric sphincter allow a little mass of chyme
to enter duodenum
...


Why dose it not digest
the stomach walls, which
are mostly proteins???

Some gastric juice is always present in stomach
...

 Gastric juice digest protein into peptides
...



Small Intestine

Caecum

SMALL INTESTINE- COMPLETE
DIGESTION


Duodenum is the part of alimentary canal
where most of the digestive process occurs
...



Pancreatic

juice

from

pancreas

contains

enzymes trypsin, pancreatic amylase and lipase
...


Next to duodenum is 2
...

 Rest of digestion of food occurs in this portion of
small intestine


Structure of jejunum
There are circular folds in the inner wall of
ileum
...

 Each villus is richly supplied with blood
capillaries and a vessel of lymphatic system
called lacteal
...



Appendix
The appendix is a narrow, finger-shaped pouch
that projects out from the colon
...

 Appendicitis is an inflammation of the appendix, a
finger-shaped pouch that projects from your colon on
the lower right side of your abdomen
...


Faeces stored in rectum, which opens out anus
...


Caecum



---