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Anatomy Exam 3

Anatomy Exam 2

QuestionAnswer
digestion break food down
absorption go into the blood stream
secretion eliminate waste
digestion in the mouth mechanical (chewing) chemical (saliva: amylase and lipase)
deglutition swallowing
bolus swallowed food
peristalsis wave like muscle contractions to move food through the digestive tract
cardioesophageal sphincter GERD
patent sphincter remained opened
how long do carbs stay in the stomach 2 hours
how long does protein stay in the stomach 4 hours
how long does fat stay in the stomach 6 hours
mucous cells make mucous, high in bicarbonate, helps you keep pH of the stomach from damaging itself
Cheif cells make pepsinogen --> converted to pepsin by HCl
Parietal cells makes HCl, activates pepsinogen
Pepsin digests protein
bolus mixes with stomach acid chyme
Cholecystachinin release bile and pancreatic enzymes
Pancreatic enzymes Amylase (sugars), lipase (fats), protease (proteins)
Secretin goes to pancreas to release bicarbonate, Protects duodenum from acid
Bile Helps to emulsify the fats so they're easier to digest
Duodenum digestion point. Where are they all broken down to? Proteins broken down to polypeptides Carbohydrates broken down to disaccharide form Fats broken down to fatty acids
Jejunum and Ileum Made with villi and microvilli aka Brush Border
Why is the brush border useful More surface area = allow more absorption to take place
Jejunum and Ileum digestion point Disaccharides break down to monosaccharides Fatty acids stay the same Polypeptides break down to amino acids
Proteas Peptide that breaks down the end of proteins to amino acids Carboxypeptidase
Where does absorption begin brushborder
After absorption what does chyme become feces
Vitamin K Bacteria in your gut that produces it from what you eat Also helps to ferment indigestible carbohydrates
Cellulose cannot be digested so bacteria does it in intestines
Controlled anal sphincter external sphincter
Created by: jojojackson
 

 



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