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Digestive System

QuestionAnswer
Study the mouth and its structures like: salivary glands and the teeth Salivary glands= secrete amalyase parotid gland submandibular gland sublingual gland
What is the membrane that attaches the lips to the gums? labial frenula superior and inferior attach the lips to the gums
What is the membrane that attaches the tongue to the floor of the mouth (what is it called) The tongue
What type of digestion takes place in the mouth? mechanical digestion which takes place in stages.
What structure forms the roof of the mouth? The roof of the mouth is the palatine bone
What structure shuts off nasopharynx when we swallow?
What structure closes the larynx or pharynx when we swallow?
What mechanism helps to move food down the esophagus? peristalsis
What is the difference between extrinsisc and intrinsic glands?
Where does digestion of carbohydrates first take place?lipids? proteins Carbs=mouth Proteins=stomach Lipids=mouth
Which enzymes are responsible for digestion of carbs?lipids?proteins? carbs=salivary amylase lipids=lingual lipase and then gastric lipase proteins-pepsin
Stomach hormones are ? Gastrin-Increases gastric secretions Grehlin-Stimulates hunger-limited function
What are the gastric secretions? mucous-protection from HCL and enzymes HCL-liquefies food, reduces dietary iron Intrinsic factor-Allows intestinal absorption of B12
Composition of lipoproteins HDL-13%cholesterol, 37% lipids, 50% proteins LDL-55% cholesterol, 20%lipids, 25% proteins
Absorptive and Post Absorptive state for carbohydrates carbohydrates(simple sugars)-into epithelial cell-out of epithelial cell by facilitated diffusion
Absorptive and Post Absorptive state for proteins Amino acids-active transport in w Na+. Diffusion-out
Absorptive and Post Absorptive state for lipids Monoglycerides + F.A-shuttled by micelles-> combine-triglycerides->mix with cholesterol and protein and
Absorptive state for lipids short chain fatty acids-simple diffusion long chains and fatty acids need-bile salts-
Created by: cokazeh
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