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






2. Converted to pepsin and synthesized by chief cells






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






4. Biting and chewing action of teeth






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






6. Where mechanical and chemical digestion of food begins






7. 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






8. 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






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






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






11. Produced by the pancreas for protein digestion






12. Produced by the pancreas to digest carbohydrates






13. Place to store food






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






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






16. To grind the food






17. Produced by the pancreas for fat digestion






18. Vessels of the lymphatic system






19. Uses intracellular and extracellular digestion






20. Unable to synthesize their own nutrients






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






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






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






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






25. Improve food digestion






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






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






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






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






30. Secreted from the intestinal mucosa for fat digestion






31. Secreted from intestinal mucos for digestion of lactose






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






33. Secretes two substances: intrinsic factor and hydrchloric acid






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






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






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






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






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






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






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






41. Lacking lactase enzyme






42. Secreted from the intestinal mucosa for polypeptide digestion






43. 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






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






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






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






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






48. Enzyme in saliva which hydrolyzes starch to maltose






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






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