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RGUHS MBBS Physiology February 2023 (1023 CBME)

1023Rajiv Gandhi University of Health Sciences · Physiology · 2023 · February · CBME

Questions (30)

  1. 1.Trace the visual pathway. Explain the lesion that occur at different levels
    10 Marks
  2. 2.Describe the structure of neuromuscular junction and explain the transmission across it. Add a note on neuromuscular blockers
    10 Marks
  3. 3.Explain the steps in synthesis and regulation of thyroid hormone synthesis
    5 Marks
  4. 4.Describe the mechanisms of heat loss and heat gain in the body
    5 Marks
  5. 5.Describe the stages and regulation of spermatogenesis
    5 Marks
  6. 6.A middle aged man reported to medical out-patient department with complaints of trembling of hands while attempting to do some work. On examination he was found to have impaired co-ordination and ataxia a) Describe the signs and symptoms of cerebellar disease b) Explain the tests used to assess cerebellar functions
    5 Marks
  7. 7.Explain the properties of sensory receptors
    5 Marks
  8. 8.Describe the actions of insulin
    5 Marks
  9. 9.Explain the action of glucocorticoids
    5 Marks
  10. 10.Illustrate the pain pathway. Explain the gate control theory of pain
    5 Marks
  11. 11.Explain the physiological significance of muscle spindle
    3 Marks
  12. 12.Explain the clinical features that occur below the level of lesion in Brown – Sequard syndrome
    3 Marks
  13. 13.List the functions of luteinizing hormones
    3 Marks
  14. 14.What is Papez circuit?
    3 Marks
  15. 15.What is the basis of sex differentiation in a fetus?
    3 Marks
  16. 16.Explain fetoplacental unit
    3 Marks
  17. 17.Explain summation in synapse
    3 Marks
  18. 18.List the functions of blood brain barrier
    3 Marks
  19. 19.Differentiate between pituitary and thyroid dwarfs
    3 Marks
  20. 20.Justify the use of L-dopa in Parkinsonism
    3 Marks
  21. 21.Endolymph is secreted by A. Reissner’s membrane B. Tectorial membrane C. Stria vascularis D. Outer hair cells
    1 Mark
  22. 22.Heteronymous hemianopia is seen in lesion of A. Optic chiasma B. Lateral geniculate body C. Optic tract D. Optic nerve
    1 Mark
  23. 23.Spinocerebellar tract carries the sensation of A. Conscious Proprioception B. Crude touch C. Unconscious Proprioception D. Pain
    1 Mark
  24. 24.Site of action of aldosterone on the renal tubule A. Proximal convoluted tubule B. Loop of Henle C. Early distal convoluted tubule D. Collecting duct
    1 Mark
  25. 25.The phase of menstrual cycle occurring after ovulation is A. Proliferative phase B. Secretory phase C. Bleeding phase D. Midluteal phase
    1 Mark
  26. 26.Chronaxie is increased when A. Excitability of tissue is low B. Threshold of excitation is decreased C. Local excitatory state is present D. Membrane potential is near firing level
    1 Mark
  27. 27.In inverse stretch reflex A. Golgi tendon organ is receptor B. Muscle length is detected C. Single synapse present D. Excitation of same alpha motor neuron is seen
    1 Mark
  28. 28.After hyperpolarisation in action potential is due to A. Opening of sodium channels B. Opening of potassium channels C. Slow closure of sodium channels D. Slow closure of potassium channels
    1 Mark
  29. 29.The only situation when the neuron is directly exposed to the external environment is in A. Taste buds B. Skin C. Cornea D. Olfactory mucous membrane
    1 Mark
  30. 30.The action of cholecalciferol on intestinal transport of calcium is mediated through A. Troponin B. Calbindin C. Calmodulin D. Cyclic AMP E.
    1 Mark

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