PLN 103 Lecture Notes - Lecture 4: Catabolism, Peristalsis, Ligament
12 Oct 2016
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Building block for growth and repair: mechanism by: E(cid:454)(cid:272)retion of stuff (cid:455)ou (cid:272)ant a(cid:271)sor(cid:271) or don"t need. Controls luminal condition so digestion and absorption can occur as effectively as possible. Provoked by chemical and mechanical stimuli: stretch receptor, ph content, presence of substances like protein. When stimulated properly: glands secrete juices to lumen or hormones into blood, stimulating smooth muscles (peristalsis) mechanically mix content inside. Organization alimentary canal (gi tract: mouth aka oral cavity, pharynx, esophagus, stomach large intestine, small intestine. Glandular organs (salivary glands, liver, pancreas and gallbladder) Produce saliva, bile, digestive enzymes: salivary amylase (starch, lipase (fat) Oral cavity- work with the teeth and tongue and salivary glands. Small intestine- work with gall bladder, liver, pancreas. Mechanical and chemical: deconstruct food into polymers. Body cant use polymers deconstruct further into monomers. Further breakdown into monomers used for energy and repair. Sugars, f. a, a,a, nucleotides: alimentary canal and accessory organs work in 6 steps:
