medical MCQs – Page 254

Practise multiple-choice questions from medical for competitive examinations and subject revision. Review each marked answer and report any item that may be outdated or unclear.

medical Mcqs

1. oral anatomy 2. microbiology 3. oral pathology and medicine 4. physiology 5. biochemistry 6. general anatomy 7. dental materials 8. pharmacology 9. pathology 10. oral histology

5061. The term myopia refers to ______________?
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A. Near sightedness

B. Far sightedness

C. Constriction of the pupil

D. Dilation of the pupil

5062. First change to occur in the distal segment of cut________________?
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A. Mitosis of schwann cell

B. Axonal degeneration

C. Sprouting

D. Myelin degeneration

5063. Cardiac output is not affected by __________________?
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A. Heart rate

B. Peripheral resistance

C. Systolic blood pressure

D. Venous return

5064. Glomerular capillary pressure differ from other capillaries of body in______________?
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A. Higher filtration pressure

B. Lower filtration pressure

C. Both of the above

D. None

5065. Pacinian corpuscles are major receptor for______________?
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A. Pain

B. Temperature

C. Pressure

D. Touch

5066. Brocas area is concerned with______________?
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A. Present in posterior part of temporal lobe

B. Word formation

C. Comprehends language not speaking

D. Is the confluence of somatic , auditory and visceral areas

5067. The pathway of pain from teeth and temperature is carried by ______________?
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A. Corticocerebral tract

B. Ventral spinothalamic tract

C. Lateral spinothalamic tract

D. Corticospinal tract

5068. The function of Carotid body is_______________?
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A. Measures Po2 in venous blood

B. Measures the changed in CO2 in arterial blood

C. Measures the change in CO2 in venous blood

D. Measures the change in Po2 in arterial blood

5069. Sympathetic stimulation causes ______________?
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A. All of the above

B. Arteriolar constriction

C. Ciliary muscle contraction

D. Sweat secretion

5070. In determining blood pressure by auscultatory method_____________?
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A. Systolic pressure estimation tends to be lower than those make by palpatory method

B. The first sound heard is the systolic pressure

C. The sounds that are heard are generated in heart

D. The loudest sound is the diastolic pressure

5071. The largest function of the total peripheral resistance is due to _________________?
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A. Capillaries

B. Arterioles

C. Venules

D. Precapillary sphincters

5072. Preganglionic parasympathetic fibers are_______________?
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A. Cholinergic

B. Somatic only

C. Parasympathetic

D. Sympathetic

5073. Red colour blindness is called________________?
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A. Deuteranopia

B. Protanopia

C. Protanomaly

D. Deuteranomaly

5074. Abdominal visceral pain is transmitted by ________________?
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A. Sympathetic fibers

B. fibers

C. Parasympathetic fibers

D. fibers

5075. Cardiac cycle duration in man is_______________?
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A. 0.4 seconds

B. 0.8 seconds

C. 1.6 seconds

D. 1.2 seconds

5076. Increase in carotid sinus pressure produces__________________?
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A. Reflex Hypercapnia

B. Reflex tachycardia

C. Reflex hyperpnea

D. Reflex Hypercapnia

5077. Stroke output of each ventricle in normal adult is_____________?
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A. 5 liters

B. 70 ml

C. 130 ml

D. 30 ml

5078. The velocity of conduction in the Purkinjie fibers of the heart is__________________?
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A. More than 12 m/sec

B. 1 to 4 m/sec

C. 9 to 12 m/sec

D. 5 to 8 m/sec

5079. In nerve , the magnitude of the action potential overshoot is normally a function of the______________?
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A. extracellular sodium concentration

B. Intracellular potassium concentration

C. Magnitude of the stimulus

D. resting membrane potential

5080. Cardiac output in L/min divided by heart rate equals_______________?
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A. Cardiac efficiency

B. Mean stroke volume

C. Mean arterial pressure

D. Cardiac index

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