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PCAT Biology Digestion

Subjects : pcat, biology
Instructions:
  • Answer 50 questions in 15 minutes.
  • If you are not ready to take this test, you can study here.
  • Match each statement with the correct term.
  • Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.
1. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






2. Produced by the pancreas for fat digestion






3. The muscular tube leading from the mouth to the stomach






4. Converted to pepsin and synthesized by chief cells






5. Enzymes are secreted to digest the fly and absorb the soluble end products






6. Where mechanical and chemical digestion of food begins






7. An acidic - semifluid mixture of partially digested food produced from the churning of the stomach






8. Restin pressures of the lower esophageal sphincter normally range from 15-35mmHg above gastric baseline pressure






9. Secretion of the parietal cells that facilitates the absorption of vitamin b12 across the intestinal lining






10. Vessels of the lymphatic system






11. Enzyme in saliva which hydrolyzes starch to maltose






12. Produced by the pancreas to digest carbohydrates






13. Place to store food






14. Bring food to the mouth (ingestion) and release the particles intoa cup-like sac






15. Produced and stored in the I cells of the duodenal and jejunal mucosa






16. Improve food digestion






17. Occurs within the cell - usually in membrane-bound vesicles






18. Refers to the enzymatic breakdown of macromolecules into smaller molecules and begins in the mouth when the salivary glands secrete saliva






19. Emulsifies fats - breaking down large globules into small droplets (contains no enzymes)






20. Produces bile in the gall bladder before release into the small intestine






21. Completes chemical digestion -divided into three section: duodenum - jejunum - and the ileum -highly adapted to absorption






22. Produces enzymes such as amylase - trypsin - lipase






23. Secreted from the intestinal mucosa for fat digestion






24. Uses intracellular and extracellular digestion






25. Finger like projections that extend out of the intestinal wall -contain capillaries and lacteals






26. A typical saprophyte that lives on dead organic material - that secrete enzymes into the external environment (on bread)






27. (Insects) have a digestive system similar to that of the earthworm






28. Stimulates the parietal cells to produce a substance (HCl) that denatures proteins and activates digestive enzymes






29. Unable to synthesize their own nutrients






30. Refers to a digestive process that occurs outside of the cell - within a lumen or tract






31. The breakdown of large food particles into smaller particles through mastication






32. A large - muscular organ located in the upper abdomen - stores and partially digests food






33. Lubricates food to facilitate swallowing and provides a solvent for food particles =secreted in response toa nervous reflex triggered by the presence of food in the oral cavity






34. Biting and chewing action of teeth






35. Patients usually have a decreased lower esophageal reflux pressure - leading to an increased passage of stomach contents into the esophagus






36. Secreted from the intestinal mucosa for polypeptide digestion






37. To grind the food






38. Fuse with the food vacuole and release their digestive enzymes that act upon the nutrients






39. Contains a typholosole to provide increased surface area for digestiona nd absorption






40. Can occur after spontaneous transient lower esophageal sphincter relaxations not associated with swallowing






41. Decreased lower esophageal sphincter pressure is not always associated with the development of GERD; however - the majority of patients






42. Secreted from intestinal mucos for digestion of lactose






43. When nutrients are required for plants - the storage polymers are broken down to simpler molecules by enzyme hydrolysis






44. Enzymes are secreted - hydrolyzing complex nutrients into simpler molecules - which are then absorbed






45. Produced by the pancreas for protein digestion






46. Secreted by the stomach that is a protein-hydrloyzing enzyme - and hydrochloric acd - which kills bacteria - dissolves the intercellular 'glue' holding food tissues together - and activates certain proteins






47. Secretes two substances: intrinsic factor and hydrchloric acid






48. Food is moved down the esophagus by this rhythmic waves of involuntary muscular contraction






49. Have one way digestive tract with both a mouth and an anus






50. Lacking lactase enzyme