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






2. 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






3. Enzyme in saliva which hydrolyzes starch to maltose






4. Produced by the pancreas for fat digestion






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






6. Line the gastrovascular cavity secrete enzymes into the cavity






7. Produced by the pancreas to digest carbohydrates






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






9. Biting and chewing action of teeth






10. Unable to synthesize their own nutrients






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






12. To grind the food






13. Secreted from the intestinal mucosa for fat digestion






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






15. Where mechanical and chemical digestion of food begins






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






17. Lacking lactase enzyme






18. Improve food digestion






19. 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






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






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






22. Secreted from intestinal mucos for digestion of lactose






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






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






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






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






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






28. Secretes two substances: intrinsic factor and hydrchloric acid






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






30. Converted to pepsin and synthesized by chief cells






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






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






33. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






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






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






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






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






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






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






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






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






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






46. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






47. 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






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






49. Place to store food






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