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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. Line the gastrovascular cavity secrete enzymes into the cavity






2. To grind the food






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






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






5. Produces enzymes such as amylase - trypsin - lipase






6. 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






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






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






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






10. Secretes two substances: intrinsic factor and hydrchloric acid






11. 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






12. Produced by the pancreas to digest carbohydrates






13. Where mechanical and chemical digestion of food begins






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






15. Produced by the pancreas for fat digestion






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






17. 1.5m long -functions in the absorption of salts and the absorption of any water not already absorbed by the small intestine






18. Lacking lactase enzyme






19. Enzyme in saliva which hydrolyzes starch to maltose






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






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






22. 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






23. Secreted from intestinal mucos for digestion of lactose






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






25. Secreted from the intestinal mucosa for polypeptide digestion






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






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






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






29. Converted to pepsin and synthesized by chief cells






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






31. Produced by the pancreas for protein digestion






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






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






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






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






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






37. Unable to synthesize their own nutrients






38. Vessels of the lymphatic system






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






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






41. Uses intracellular and extracellular digestion






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






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






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






45. Improve food digestion






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






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






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






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






50. Biting and chewing action of teeth