Quiznetik

Digestion | Set 2

1. Chemotrypsinogen in pancreatic juice is activated by:

Correct : C. Trypsin

2. Pancreatic lipase is activated by:

Correct : B. Bile salts

3. All of the following statements concerning pancreatic secretion are true except:

Correct : C. It’s secretion is primarily under neural control

4. The following stimulate pancreatic secretion rich in enzymes and poor in HCO₃⁻ except:

Correct : C. Secretin

5. Loss of pancreatic secretion produces the following except:

Correct : D. Alkalosis

6. Pancreatic amylase is activated by:

Correct : C. Cl ⁻ ions

7. PH of pancreatic secretion is about:

Correct : C. 8

8. he volume of pancreatic secretion per day is about:

Correct : B. 1.5 L

9. All the following statements concerning pancreatic secretion are true except:

Correct : D. Contains enzymes which digest polysaccharides to monosaccharides

10. Pancreatic secretion is inhibited by all the followings except:

Correct : C. Acid in the duodenum

11. All the following statements about pancreatic secretion are true except :

Correct : C. Failure of both pancreatic and biliary secretions is needed before steatorrhea develops .

12. All the following are correct statements about pancreatic secretion except:

Correct : C. Vagotomy augment secretion of enzymes after meal .

13. Select a single incorrect answer about pancreatic secretion.

Correct : C. Pancreatic lipase is activated by alkaline pH.

14. The following statements about pancreatic secretion are false except:

Correct : C. The hormone which stimulates enzyme _ rich secretion also causes contraction of gall bladder.

15. All the following are true about liver functions except:

Correct : D. Essential fatty acids are synthesized in liver.

16. All the following statements are correct about liver cells except:

Correct : C. They form TPP from vitamin B6.

17. Liver perform the following function except:

Correct : A. Haemopoiesis in adults.

18. Liver functions include all the followings except:

Correct : D. Formation of essential amino acids.

19. The following statements about bile secretion are correct exept:

Correct : B. Ductular secretion represents 75% of bile secretion.

20. all the following statement about bile secretion are true except:

Correct : C. Gall bladder bile contain less organic constituent than hepatic bile

21. Gall bladder bile is characterized by all the followings except:

Correct : C. More inorganic constituent.

22. The following statement about bile salts are correct except:

Correct : B. They are Na+ and K+ salts of bile acids conjugated with glucoronic acid.

23. All the follwings are true about bile salt except;

Correct : C. The total circulating pool of bile salts is 0.2-04gm

24. The following are choleretics except:

Correct : D. Bile pigments

25. Which of the followings has the highest pH:

Correct : C. hepatic bile.

26. Bile secretion contains the following constituents except:

Correct : C. Free bilirubin.

27. Bile secretion is stimulated by the following except:

Correct : C. Sympathetic stimulation.

28. Bile salts promotes lipid absorption as a result of all the followings except:

Correct : D. Non of the above.

29. The following statements about absorption of bile salts are true except:

Correct : C. Passive diffusion transport of them.

30. Emptying of gall bladder is stimulated by the followings except:

Correct : B. Sympathetic stimulation.

31. The following statements are correct about functions of gall bladder except:

Correct : C. Secretion of NaHCO3 by gall bladder prevents precipitation of calcium.

32. Select the single correct answer about bile pigments:

Correct : C. Cholebilirubin is the conjugated bilirubin.

33. All the following statements about bile pigments are true except:

Correct : B. In blood bilirubin combines with plasma albumin to form conjugated bilirubin.

34. Contraction of gallbladder is described by the following statement except:

Correct : B. It is stimulated mainly by acid chyme in duodenum.

35. All the following are correct statements about liver cells except:

Correct : D. They are the only site of synthesis of plasma globulins.

36. The following statements about bile salts are true except:

Correct : C. They are actively absorbed from duodenum.

37. Choose a single incorrect answer about bile salts:

Correct : D. Non of the above.

38. Emptying of GB is inhibited by the followings except:

Correct : C. Estrogen.

39. The following statements about succus entericus are true except:

Correct : D. It is released mainly by vagal stimulation.

40. Succus entericus is inhibited by the followings except:

Correct : C. Prostaglandins

41. Intestinal proteolysis is caused by the followings except:

Correct : D. Pepsin.

42. The intestinal brush border help digestion by the followings except:

Correct : A. Facilitating movements of intestinal content.

43. Cholera toxins cause diarrhea by:

Correct : B. Activation of cAMP-activated C1- channels.

44. The volume of succus entericus per day is about:

Correct : B. 2L.

45. Digestion of proteins by succus entericus enzymes includes all the following enzymes except:

Correct : C. Nucleases.

46. Lactase enzyme splits lactose into:

Correct : B. Glucose and galactose.

47. Enteric lipase splits neutral fat into:

Correct : B. Fatty acid glycerol and monoglycerides.

48. The main mechamism of succus entericus secretion is:

Correct : D. Local axon reflex

49. The extracellular enzyme in succus entericus is:

Correct : D. Enterokinase.

50. The followings are true statements about absorption from small intestine except:

Correct : C. Vit. B12 is absorbed by diffusion

51. Choose a single incorrect answer about absorption from small intestine:

Correct : C. HCO3- ions are absorbed passively.

52. The absorptive surface area of small intestineis over:

Correct : B. 250m2

53. Intestinal motility help absorption from small intestine by all the following except:

Correct : C. Increase osmotic pressure.

54. The following statement about calcium absorption from small intestine are true except:

Correct : C. It occours by passive diffusion from upper small intestine.

55. The following are true statement about fat absorption from small intestine except:

Correct : C. Deficiency of fat absorption leads to poor absorption of VIT.B complex.

56. The transport of glucose across intestinal mucosa is directly dependent Upon the following except:

Correct : B. Plasma insulin.

57. Absorption of fat soluble vitamins require the following:

Correct : A. Bile.

58. The major site of absorption of VIT B12 is:

Correct : D. Ileum.

59. The following are true statement about absorption from small intestine except:

Correct : B. D amino acids are absorped better than L amino acids.

60. The amount of water excreted in stool is about:

Correct : A. 100mld

61. Absorption of Na ions from small intestine occur by the following except:

Correct : D. None of the above.

62. Absorption of Cl- ions from small intestine occur by the following ways except:

Correct : B. 1 ry active transport.

63. All of the followings are absorped by Na dependent 2ry active transport except:

Correct : D. VitaminB.12

64. The following are true statement about iron absorption from small intestine except:

Correct : D. It is transported from the brush borderas Fe+3 or heme.

65. Fructose is absorped from small intestine by :

Correct : B. Facilitated diffusion.

66. Pentose is absorped from small intestine by:

Correct : A. Simple diffusion.

67. Whole proteins may be absorped from small intestine by :

Correct : A. Pinocytsis.

68. Vitamin D is absorped from small intestine as the absorption of :

Correct : C. Cholesterol.

69. VitaminC is absorped from small intestine by:

Correct : B. Na+ dependant 2ry active transport.

70. Peristaltic contractions of small intestine are characterized by all of the followings except:

Correct : A. They are myogenic

71. The following reflexes inhibit small intestine motility except:

Correct : C. Gastro-ileal.

72. Rhythmic segmentation of small intestine is characterized by the following except:

Correct : A. It is due to local axon reflex.

73. Peristaltic waves in the small intestine are characterized by the following statement except:

Correct : C. They are controlled primarily by extrinsic innervation

74. Migration motor complex is characterized by the following except:

Correct : C. It helps digestion of food

75. Peristaltic rush are characterized by the following except:

Correct : B. They occur normally.

76. Small intestine motility is stimulated by the following except:

Correct : C. Secretin

77. Small intestine motility is inhibited by the following except:

Correct : D. Insulin.

78. Motility of small intestine is inhibited by the following except:

Correct : D. Distention of stomach.

79. Large intestinal secretion is stimulated by:

Correct : D. All of the above.

80. Colonic motility is stimulated by the following except:

Correct : B. Colono-colic reflex.

81. Emptying at ileocecal region is promoted by:

Correct : C. Distention of stomach.

82. Emptying at ileocecal region is inhibited by:

Correct : C. Colonoileal reflex.

83. Removal of the entire colon would be expected to cause:

Correct : C. Decrease urinary urobilinogen.

84. The parasympathetic supply of the distal colon is:

Correct : A. Pelvic nerve.

85. The external anal sphincter is supplied by:

Correct : B. Pudendal nerve.

86. Large intestine secretion is stimulated by:

Correct : D. All the above.

87. Mass movement in the colon after meal is due to the following except:

Correct : D. Secretine hormone.

88. Mass movement in the colon would be abolished by:

Correct : C. Destruction of the intrinsic nerve plexus.

89. The following are true about defecation except:

Correct : C. It is under voluntary control in infant.

90. Anal mucosa is sensitive to all of the following except:

Correct : B. Stretch.

91. Rectal mucosa is sensitive to:

Correct : D. Stretch

92. Resting anal pressure is mainly due to :

Correct : B. Tone of the internal sphincter.

93. Fecal continence requires:

Correct : D. All of the above