USMLE: Medical Science MCQs (Practice-Test 117 of 135)

Download PDF of This Page (Size: 156K) ↧

1. • Assertion (A): REM sleep is termed as paradoxical sleep.
   • Reason (R): It is the type of sleep in which the EEG is desynchronized.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

2. • Assertion (A): The faeces are bulky, greasy and often foul smelling in biliary obstruction.
   • Reason (R): In biliary obstruction, the faeces are devoid of sterco-bilinogen

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

3. • Assertion (A): In transmural myocardial in farcts, a narrow rim of subendocardial myocardium is preserved.
   • Reason (R): Transmural myocardial in farcts are most often encountered in right ventricle.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

4. • Assertion (A): The presence of antigen antibody complexes in circulation is diagnostic of immune complex disease.
   • Reason (R): The immune complexes produce tissue damage by localising in blood vessel walls.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

5. • Assertion (A): Leukotrienes are very important in anaphylaxis.
   • Reason (R): Leukotrienes are several thousand times more potent than histamine.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

6. • Assertion (A): An autogenous cancellous bone is preferred as a bone graft.
   • Reason (R): It has more osteogenic potential than cortical bone.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

7. • Assertion (A): Attributable risk is a measure of the extent of disease one can attribute to the risk factor.
   • Reason (R): It is an estimate of the odd sratio.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

8. • Assertion (A): Following an attack of poliomyelitis a child need not be immunized with OPV.
   • Reason (R): An attack of poliomyelitis confers lasting immunity.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

9. • Assertion (A): The National Programme for prevention of blindness prescribes 2, 00, 000 IU of Vit. A oral to all children upto three every six months.
   • Reason (R): Vit. A deficiency is the major cause of blindness in India.

   1. Both A and R are true and R is the correct explanation of A

   2. Both A and Rare true but R is NOT a correct explanation of A

   3. A is true but R is false

   4. A is false but R is true

10. The abducation movement at hip joint is brought about by the contraction of a group of muscles which includes

    1. Gluteus maximus, Gluteus medius, Gluteus minimus and piriformis

    2. Gluteus medius, Iluteus ininimus, piriformis and Sartorius

    3. Gluteus minimus, pirifonnis, Sartorius and the Hamstring part of the adductor magnus

    4. Gluteus medius, Gluteus minimus, tensor fascialata and the obturator part of the adductor magnus

11. Match List-I (Heart valves) with List-II (Surface marking) and select the correct answer:

    List-I	List-II
    Pulmonary Aortic Mitral Tricuspid	Behind the upper border of the third left costal cartilage Opposite fourth and fifth right intercostal space Opposite left fourth costal cartilage At the lower border of third left costal cartilage

    • A
    • B
    • C
    • D
    1. • 1
       • 4
       • 3
       • 2
    2. • 1
       • 4
       • 2
       • 3
    3. • 4
       • 1
       • 3
       • 2
    4. • 4
       • 1
       • 2
       • 3

12. Match List-I (Peritoneal folds in relation to stomach) with List-II (Structures between the peritoneal folds). and select the correct answer

    List-I	List-II
    Lesser omentum Greater ornentum Lieno-renal ligament Gastro-splenic ligament	Bile duct Short gastric arteries Tail of pancreas Gastroepiploic arteries

    • A
    • B
    • C
    • D
    1. • 1
       • 4
       • 3
       • 2
    2. • 1
       • 2
       • 3
       • 4
    3. • 3
       • 4
       • 1
       • 2
    4. • 3
       • 2
       • 1
       • 4