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Digestive System Song

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Uploaded on Dec 13, 2011

Title speaks for itself

Lyrics:

Digest it all up!
It ain't easy enough!
Digestion starts at the mouth, when food we eat is chewed right up
Saliva secretes from parotid, sublingual and submandibular glands
Mucus is contained within to moisten and lubricate
And amylase begins the digestion of polysaccharides
Traveling past the pharynx, through the esophagus, down to the acidic pit
Known as the stomach
Secreting HCL it kills bacteria and dissolves the proteins, CHOs and picky matter but sparring fat!
It stores, dissolves and also partially digests macromolecules while regulating the
Emptying to the small intestines down below

Food is completely reduced to chyme within the stomach's walls
And only water can cross the gastric epithelium
Final stages now proceed with absorption occurring in
The nine foot long bundled up small intestine
Food gets further broken down to acids both fatty and amine
Digesting and absorbing mostly in the
Duodenum and jejunum

Pancreas then secretes digestive enzymes and fluids high in bicarbonate
All by ducts in duodenum
The liver it secretes bile which contains bicarbonate ions, salts, pigments, and all organic waste, phospholipids and cholesterol

Common bile duct and pancreatic duct combine their secretions
While they enter the duodenum
Gall bladder stores the bile guck!

The smooth muscle found in the wall of the intestine
Mixes luminal contents with the secretions bringing contents in
Contact with epithelial surface for absorption
Moving contents toward the large intestine
Where it gathers contracting the rectum
Relaxing the sphincters pushing it all out
Ain't a single doubt
Crap goes right on out!

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