DR. YSR UNIVERSITY OF HEALTH SCIENCES: AP: VIJAYAWADA-520 008
MBBS DEGREE EXAMINATION – APRIL, 2023
FIRST M.B.B.S. EXAMINATION
PHYSIOLOGY – PAPER-II (SET-D)
(Multiple Choice Questions)
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Time: 20 Minutes
Note: Answer all questions
SECTION – I (MCQs- 20 MARKS)
1x20=20
- Multi unit smooth muscle is found in
- Heart
- GI tract
- Large blood vessel
- Urinary bladder
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- Addison's disease is due to
- Hyper-adrenalism
- Hypo-adrenalism
- Increased secretion of melanin
- Increased Adrenal Androgens
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- The transport of proteins and polypeptides synthesized in soma of nerve cell to the axonal ending is called as
- Retrograde transport
- Axoplasmic flow
- Transcytosis
- Exocytosis
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- Which of the following muscle cannot be tetanized
- Skeletal muscle
- Smooth muscle
- Cardiac muscle
- All the above
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- Which of the following hormones acts on its target tissues by a steroid hormone mechanism of action
- Thyroid hormone
- Parathyroid hormone (PTH)
- Antidiuretic hormone (ADH) on the collecting duct
- Glucagon
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- Inhibin inhibits
- FSH
- TSH
- ACTH
- TRH
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- Factors that stimulate growth hormone is
- Increased blood glucose
- Exogenous growth hormone
- Somatomedin
- Testosterone
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- The growth hormone receptor
- Must be internalized to exert its effect
- Requires dimerization to exert its effect
- Resembles IGF-I receptor
- Resembles ACTH receptor
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- Regression of tissues as in uterine regression after pregnancy is a function of
- Nucleus
- Lysosomes
- Secretory vesicles
- Peroxisomes
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- The intrafusal fibers of muscle spindle is supplied by
- Alpha motor neuron
- Dorsal root Neuron
- Gamma motor neuron
- Renshaw cell
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- Blood testis barrier is formed by
- Leydig cell
- Sertoli cells
- Epididymis
- Vas deferens
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- The property of specificity of nerve fibers for transmitting only one modality of sensation is called
- Law of projection
- Spatial summation
- Labelled line principle
- Weber-Fechner law
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- Sensation carried by the lateral spinothalamic tract is
- Crude touch and fine touch
- Tactile localization and discrimination
- Vibration and proprioception
- Pain and temperature
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- Vagal stimulation causes increase in
- Heart rate
- R-R interval in ECG
- Cardiac output
- Force of contractions
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- The increase in heart rate following an increase in atrial pressure is called as
- Bainbridge reflex
- Volume reflex
- Cushing's Reflex
- Baroreceptor reflex
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- The nucleus responsible for maintaining circadian rhythm is
- Subthalamic nucleus
- Suprachiasmatic nucleus
- Raphe nucleus
- Lateral reticular nucleus
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- Refractive index of cornea is
- 1.39
- 1.33
- 1.42
- 1.37
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- The Refractive error which occurs in elderly people is
- Myopia
- Astigmatism
- Hypermetropia
- Presbyopia
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- Parkinson's disease is characterized by the following triad
- Hypokinesia, rigidity, tremors
- Rigidity, tremors, nystagmus
- Placidity, intentional tremors, ataxia
- Rigidity, hypokinesia, dysarthria
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- Lesion in optic chiasma causes
- Binasal hemianopia
- Bitemporal hemianopia
- Contralateral homonymous hemianopia
- Ipsilateral complete blindness
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