4. Gi and Nutritional Disorders.

1. Nutritional Disorders.

***) One of the following is not a feature of celiac disease: Q2012

1. Anemia

2. Weight loss

3. Fever

4. Diarrhea

5. Hypocalcemia

Answer: C* Fever

***) The disease characterized by the three symptoms: diarrhea, dementia, and dermatitis are caused by:

1. Ariboflavinosis

2. Beriberi

3. Scurvy

4. Pellagra

5. Kwashiorkor

Answer: D* Pellagra

2. Gi Malabsorption.

***) One of the following is not dependent on bile salts for its absorption: Q2012

1. Vitamins A

2. Vitamin B

3. Vitamin K

4. Vitamin D

5. Vitamin E

Answer: B* Vitamin B

***) Young female presented with leg pain, gum bleeding and Ecchymosis. The most appropriate vitamin deficiency is: Q2012

1. Vitamin A

2. Vitamin B₁₂

3. Vitamin C

4. Vitamin D

5. Vitamin E

Answer: C* Vitamin C

***) Iron is absorbed at: Q2012

1. Stomach

2. Duodenum & Jejunum

3. Ileum

4. Colon

5. Descending colon

Answer: B* Duodenum & Jejunum

***) Causes of malabsorption include all of the following, except:

1. Celiac disease

2. Pancreatic insufficiency

3. Intestinal lymphoma

4. Crohn's disease

5. Irritable bowel syndrome

Answer: E* Irritable bowel syndrome

***) Causes of malabsorption include all of the following, except:

1. Gluten enteropathy

2. Systemic sclerosis

3. Bacterial overgrowth

4. Lymphoma

5. Cholecyctitis

Answer: E* Cholecyctitis

***) Causes of malabsorption include all of the following, except:

1. Tropical sprue

2. Giardia lamblia

3. Acute pancreatitis

4. Systemic sclerosis

5. Pancreatic carcinoma

Answer: C* Acute pancreatitis

***) Vitamin B₁₂ is absorbed at:

1. Stomach

2. Jejunum

3. Ileum

4. Colon

5. Duodenum

Answer: C* Ileum

***) Calcium, iron and folates are absorbed at:

1. Stomach

2. Upper small intestine

3. Ileum

4. Caecum

5. Descending colon

Answer: B* Upper small intestine

***) Primary site of folate absorption is:

1. Jejunum

2. Duodenum

3. Large bowel

4. Stomach

5. Esophagus

Answer: A* Jejunum

***) Regarding vitamins deficiency, one is not matching:

1. Vitamin D deficiency - Rickets

2. Vitamin A deficiency - Night blindness

3. Vitamin K deficiency - Hemorrhage disease of newborn

4. Vitamin B₁₂ deficiency - Megaloblastic anemia

5. Biotin - Pellagra

Answer: E* Biotin – Pellagra

***) Concerning hypovitaminosis all of the following statements are correct, except:

1. Vitamin A deficiency leads to xerophthalmia

2. Vitamin B_l (thiamine) deficiency leads to beriberi

3. Vitamin C deficiency leads to scurvy

4. Vitamin K deficiency leads to bleeding

5. Vitamin B₁₂ deficiency leads to microcytic anemia

Answer: E* Vitamin B₁₂ deficiency leads to microcytic anemia

***) Which of the following mineral deficiencies is not matching:

1. Fluoride - Dental caries

2. Iodine - Congenital thyroid goiter

3. Potassium - Osteoporosis

4. Zink - Acrodermatitis enteropathica

5. Iron - Spoon nail

Answer: C* Potassium – Osteoporosis

***) All of the following statements concerning bile acid are true, except:

1. It is degradation product of old RBC

2. It is essential for digestion and absorption of fat and fat soluble-vitamins

3. It stimulates peristaltic movements

4. It has antiseptic action

5. It is absorbed mostly in the terminal ileum

Answer: D* It has antiseptic action

***) The terminal ileum is the absorptive site for which of the following:

1. Glucose

2. Folic acid

3. Bile salts

4. Xylose

5. Iron

Answer: C* Bile salts

***) Diseased or surgically resected terminal ileum will significantly reduce the absorption of one of the following:

1. Iron

2. Bile salts

3. Folic acid

4. Vitamin

5. Calcium

Answer: B* Bile salts

***) Which of the following has the greatest effect on enhancing calcium absorption from the gastrointestinal tract:

1. 25-hydroxycholecalciferol

2. 24,25-dihydrocholecalciferol

3. 1.25-dihydrocholecalciferol

4. Parathyroid hormone

5. Calcitonin

Answer: C*1.25-dihydrocholecalciferol

***) All are fat-soluble vitamins, except:

1. Vitamins A

2. Vitamin B₁₂

3. Vitamin K

4. Vitamin D

5. Vitamin E

Answer: B* Vitamin B₁₂

***) Regarding Vitamin A, all the following are true, except:

1. Deficiency can cause keratinization of mucous membrane and skin

2. Overdose may cause pseudotumor cerebri

3. Craniotabes is characteristic in vitamin A deficiency

4. Bile is necessary for absorption

5. Xerophthalmia is a feature of vitamin A deficiency

Answer: C* Craniotabes is characteristic in vitamin A deficiency