QP CODE: 1023
Rajiv Gandhi University of Health Sciences, Karnataka
MBBS Phase- I(CBME) Degree Examination-11-Feb-2023
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Time: Three Hours Max. Marks: 100Marks
PHYSIOLOGY- PAPER-II (RS-4)
Q.P.CODE: 1023
(QP contains two pages)
Your answers should be specific to the questions asked
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Draw neat, labeled diagrams wherever necessary
LONG ESSAYS 2x10=20Marks
- Trace the visual pathway. Explain the lesion that occur at different levels
- Describe the structure of neuromuscular junction and explain the transmission across it. Add a note on neuromuscular blockers
SHORT ESSAYS 8x5=40 Marks
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- Explain the steps in synthesis and regulation of thyroid hormone synthesis
- Describe the mechanisms of heat loss and heat gain in the body
- Describe the stages and regulation of spermatogenesis
- 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
- Describe the signs and symptoms of cerebellar disease
- Explain the tests used to assess cerebellar functions
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- Explain the properties of sensory receptors
- Describe the actions of insulin
- Explain the action of glucocorticoids
- Illustrate the pain pathway. Explain the gate control theory of pain
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SHORT ANSWERS 10x3=30Marks
- Explain the physiological significance of muscle spindle
- Explain the clinical features that occur below the level of lesion in Brown - Sequard syndrome
- List the functions of luteinizing hormones
- What is Papez circuit?
- What is the basis of sex differentiation in a fetus?
- Explain fetoplacental unit
- Explain summation in synapse
- List the functions of blood brain barrier
- Differentiate between pituitary and thyroid dwarfs
- Justify the use of L-dopa in Parkinsonism
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Multiple Choice Questions 10x1=10Marks
- Endolymph is secreted by
- Reissner' s membrane
- Tectorial membrane
- Stria vascularis
- Outer hair cells
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- Heteronymous hemianopia is seen in lesion of
- Optic chiasma
- Lateral geniculate body
- Optic tract
- Optic nerve
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- Spinocerebellar tract carries the sensation of
- Conscious Proprioception
- Crude touch
- Unconscious Proprioception
- Pain
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- Site of action of aldosterone on the renal tubule
- Proximal convoluted tubule
- Loop of Henle
- Early distal convoluted tubule
- Collecting duct
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- The phase of menstrual cycle occurring after ovulation is
- Proliferative phase
- Secretory phase
- Bleeding phase
- Mid luteal phase
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- Chronaxie is increased when
- Excitability of tissue is low
- Threshold of excitation is decreased
- Local excitatory state is present
- Membrane potential is near firing level
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- In inverse stretch reflex
- Golgi tendon organ is receptor
- Muscle length is detected
- Single synapse present
- Excitation of same alpha motor neuron is seen
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- After hyperpolarisation in action potential is due to
- Opening of sodium channels
- Opening of potassium channels
- Slow closure of sodium channels
- Slow closure of potassium channels
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- The only situation when the neuron is directly exposed to the external environment is in
- Taste buds
- Skin
- Cornea
- Olfactory mucous membrane
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- The action of cholecalciferol on intestinal transport of calcium is mediated through
- Troponin
- Calbindin
- Calmodulin
- Cyclic AMP
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