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






2. Improve food digestion






3. Produces enzymes such as amylase - trypsin - lipase






4. Lacking lactase enzyme






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






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






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






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






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






11. 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






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






13. Produced by the pancreas for protein digestion






14. Place to store food






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






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






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






18. Converted to pepsin and synthesized by chief cells






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






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






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






22. To grind the food






23. Produced by the pancreas for fat digestion






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






25. Biting and chewing action of teeth






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






27. Vessels of the lymphatic system






28. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






31. Secreted by the glands of the stomach which protects the stomach lining from the harshly acidic juices present in the stomach






32. Uses intracellular and extracellular digestion






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






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






36. Begins with oral cavity and continues with the pharynx - the esophagus - stomach - small inestine - large intestive - then anus






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






38. Secreted from the intestinal mucosa for polypeptide digestion






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






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






41. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






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






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






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






45. Unable to synthesize their own nutrients






46. Secreted from the intestinal mucosa for fat digestion






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






48. Line the gastrovascular cavity secrete enzymes into the cavity






49. Produced by the pancreas to digest carbohydrates






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