Download MBBS RUHS 1st Year 1st Year 2023 November Physiology Paper I Question Paper

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I-MBBS 01112A1+01112A2

(This question paper consists of 2 pages)

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First M.B.B.S. (New Scheme) (Main) Examination

November - 2023

PHYSIOLOGY

Paper- I

Time: Three Hours

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Maximum Marks: 100

Attempt all questions in both sections.

(Use separate answer book for each section)

Section-A

1. Fill in the blanks: 6x1=06
   1. The coupling ratio for sodium potassium pump is __________
   2. Initiation of action potential occur at __________ of neuron.

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   3. Melatonin is secreted by __________
   4. Cells responsible for nourishment of sperm __________
   5. ECG rhythm having lowest frequency is __________
   6. In an isotonic contraction of muscle __________ remain same.

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2. Choose the correct option in the following multiple choice questions: 4x1=04
   1. Strongest stimulation for ADH secretion is:
      1. Hypersomolarity
      2. Hyponatremia
      3. Hypotension
      4. Hypovolemia

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   2. Conscious proprioception is carried by:
      1. Dorsal column
      2. Anterior spinothalamic tract
      3. Lateral spinothalamic tract
      4. Vestibular tract

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   3. Binasal Hemianopia occurs when the lesion is present in:
      1. Right optic nerve
      2. Optic Chiasma
      3. Temporal retina
      4. Left geniculocalcarine tract

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   4. Which body muscle can resist fatigue?
      1. Skeletal muscle
      2. Cardiac muscle
      3. Smooth muscle
      4. Both a & b

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3. A 35-year-old female is taking oral pills to avoid conception. She missed doses of pills for two successive days. 3x5=15
   1. What precautions should she take in this situation to avoid conception?
   2. What are the various contraceptive methods in female?
   3. Explain mechanism of action of oral contraceptive pills.

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4. Write short notes on (Any five): 5x2=10
   1. Excitation contraction coupling
   2. Diabetes insipidus
   3. Gate control theory of pain
   4. REM Sleep
   5. Organ of Corti

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   6. Law of projection
5. Explain briefly (Any three): 3x5=15
   1. Muscle spindle
   2. Circadian rhythm
   3. Motor aphasia

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   4. Conditioned reflex

Section-B

1. Name parts of Basal ganglia. Describe causes, features and treatment of Parkinsonism. 20
2. What will happen and why? (Any five): 5x2=10
   1. An individual who sleeps with their arm under their head for a long period.
   2. To gain sensation after local rubbing.

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   3. To ovulation during breastfeeding.
   4. To a person’s vision when he enters into a cinema hall.
   5. To color of skin in primary adrenal insufficiency.
   6. To eye muscle in myasthenia gravis.

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3. Explain briefly (Any four): 4x5=20