Download NTRUHS 1st Year MBBS 2022 February Physiology Paper I Question Paper

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CBME

DR. NTR UNIVERSITY OF HEALTH SCIENCES: AP-VIJAYAWADA-520 008

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MBBS DEGREE EXAMINATION – JAN/FEB, 2022

FIRST M.B.B.S. EXAMINATION

PHYSIOLOGY - PAPER-I (SET-A)

(Multiple Choice Questions)

Time: 20 Minutes Max Marks: 20

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Note: Answer all questions

SECTION – I (MCQs- 20 MARKS) 1x20=20

1. The medullary stage of hemopoiesis starts in:
   1. 5th month of fetal life
   2. 7th month of fetal life
   3. 9th week of fetal life

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   4. After birth
2. Iron deficiency anemia is
   1. Macrocytic hypochromic
   2. Microcytic hypochromic
   3. Normocytic hypochromic

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   4. Normocytic normochromic
3. Which of the following chemical is not released from dense granules of platelets?
   1. ADP
   2. Fibronectin
   3. Serotonin

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   4. Calcium
4. In clotting mechanism via intrinsic and extrinsic pathway, the key reaction is:
   1. Formation of thrombin
   2. Formation of fibrin
   3. Formation of prothrombin activator

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   4. Conversion of factor X to Xa
5. Dicoumarol acts by:
   1. Chelating calcium
   2. Inhibiting thrombin activity
   3. Inhibiting plasmin activators

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   4. Inhibiting Vitamin K
6. Conduction velocity of cardiac impulse is highest in which part of conducting system?
   1. Intermodal pathway
   2. His bundle
   3. Purkinje fibers

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   4. Bundle branches
7. Ejection fraction of the ventricle refers to the ratio of:
   1. Amount of blood received to amount of blood ejected
   2. Stroke volume to end diastolic volume
   3. End-systolic volume to end diastolic volume

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   4. Stroke-volume to end systolic volume
8. Bradycardia is seen in
   1. Beriberi
   2. Anemia
   3. Myxedema

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   4. Paget's disease
9. The common artery involved in cerebral hemorrhage is:
   1. Lenticulostriate branch of middle cerebral artery
   2. Posterior basilar artery
   3. Anterior cerebral artery

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   4. Middle meningeal artery
10. 'a' wave of jugular venous pulse is caused by
    1. Atrial systole
    2. Ventricular systole
    3. Atrial diastole

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    4. Ventricular diastole
11. Surfactant is produced by:
    1. Type II pneumocytes
    2. Type I pneumocytes
    3. Macrophages

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    4. Endothelial cells
12. Timed-vital capacity of FEV1 is < 70% in:
    1. Bronchial asthma
    2. Bronchitis
    3. Pulmonary fibrosis

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    4. Lung collapse
13. Ventilation perfusion ratio is maximum at:
    1. Apex of lung
    2. Base of lung
    3. Posterior lobe of lung

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    4. Middle of the lung
14. The pacemaker of respiration is:
    1. Dorsal nuclear group
    2. Apneustic centre
    3. Pneumotaxic centre

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    4. Pre Botzinger complex
15. Carbon monoxide poisoning is a type of:
    1. Anaemic hypoxia
    2. Histotoxic hypoxia
    3. Hypoxic hypoxia

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    4. Stagnant hypoxia
16. Which is true about juxtamedullary nephrons?
    1. Accounts for 85% of total nephrons
    2. Length of Loop of Henle is short
    3. Efferent arteriole forms vasa recta

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    4. Renin content is less
17. Substrate which is both secreted and filtered
    1. Uric acid
    2. Glucose
    3. Urea

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    4. Na+
18. Water reabsorption that occurs secondary to solute reabsorption is called:
    1. Obligatory reabsorption
    2. Facultative reabsorption
    3. Complementary reabsorption

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    4. Compulsive reabsorption
19. Which part of kidney tubule plays less role in acidification of urine?
    1. DCT
    2. Loop of Henle
    3. PCT

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    4. Collecting duct
20. Spastic neurogenic bladder is seen in:
    1. Spinal cord transaction
    2. Deafferentation
    3. Denervation

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    4. Bladder tumor

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