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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. Produced by the pancreas for fat digestion






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






3. Improve food digestion






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






5. Synthesized and stored in the S cells of the upper intestine -stimulates the secretion of bicarbonate-containing substances from the pancreas and inhibits gastric emptying and gastric acid production






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






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






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






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






10. Line the gastrovascular cavity secrete enzymes into the cavity






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






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






13. Secreted from intestinal mucosa for digestion of maltose - lactose - sucrose






14. Degradation of large molecules into smaller molecules that can be absorbed into the bloodstream and used directly by cells






15. Unable to synthesize their own nutrients






16. Biting and chewing action of teeth






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






18. Where mechanical and chemical digestion of food begins






19. Secreted from intestinal mucos for digestion of lactose






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






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






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






23. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






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






27. Accomplished by enzymatic hydrolysis -nutrients pass through the semipermeable plasma membrane of the gut cells to be further metabolized or transported






28. Converted to pepsin and synthesized by chief cells






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






30. Place to store food






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






32. Secreted from the intestinal mucosa for fat digestion






33. Vessels of the lymphatic system






34. Produced by the pancreas for protein digestion






35. Pseudopods surround and engulf food and enclose it in food vacuoles






36. Enzyme in saliva which hydrolyzes starch to maltose






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






38. 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






39. Produces enzymes such as amylase - trypsin - lipase






40. Large particles of food into small particles begins by cutting and grinding in the mouth and churning in the digestive tract






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






42. Secretes two substances: intrinsic factor and hydrchloric acid






43. Provides for transient storage of feces before elimination through the anus






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






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






46. Uses intracellular and extracellular digestion






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






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






49. To grind the food






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