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Biology-Related Homework Help Anatomy and Physiology Topic started by: nite_n_day on Jun 29, 2013



Title: Imagine eating a soda cracker, which is basically starch, fat, protein, and salt
Post by: nite_n_day on Jun 29, 2013
Imagine eating a soda cracker, which is basically starch, fat, protein, and salt. How would each of these components be digested? Where within the digestive system would they be digested? Are any accessory organs involved?


Title: Re: Imagine eating a soda cracker, which is basically starch, fat, protein, and salt
Post by: doseofmegan on Jun 30, 2013
"Digestion begins in the oral cavity. Food triggers saliva from the parotids, rich in amylase, and from the submandibulars, rich in mucus. The tongue and teeth cooperate to mix all together and form a bolus. Digestion of fats and starch begins due to lingual lipase and salivary amylase. Swallowing reflexes send it to the stomach. Acid and pepsin greet the bolus. Peptides form from the wheat proteins due to action of pepsin. It then travels into the small intestine, where pancreatic lipase and amylase complete fat and starch digestion. Pancreatic proteinases and peptidases reduce peptides to amino acids. These are absorbed by cotransport. Maltose from starch is split into glucose molecules, which are absorbed by cotransport. The salt in the cracker is absorbed during cotransport. Fatty acids diffuse into the epithelial cells because of their lipid character."


Title: Re: Imagine eating a soda cracker, which is basically starch, fat, protein, and salt
Post by: nite_n_day on Jun 30, 2013
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Title: Re: Imagine eating a soda cracker, which is basically starch, fat, protein, and salt
Post by: doseofmegan on Jul 1, 2013
You're welcome  :)