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Quiz 56
Mdcat-past-papers - UHS Quiz
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Board: UHS |
1101. The accumulation of 'lactic acid' in the muscles results in :
Extreme fatigue
Muscle contraction
Paralysis
Convulsion
1102. Thick filaments in skeletal muscles are composed of :
Actin
Myosin
Tropomyosin
Troponin
1103. Sarcomeres is part of myofibril between :
Two I bands
Two A bands
Two M lines
Two Z lines
1104. Over activity of sympathetic nervous system causes:
Disturbance of vision
constipation
decrease in blood pressure
increase in heart rate
1105. Which structure respond when they are stimulated by impulse coming through motor neuron?
Receptors
Responses
Effectors
Transductors
1106. The part of neuron fibre which conducts nerve impulses away from the cell body is:
Dendron
dendrites
Axon
Peripheral branch
1107. The number of cranial nerves in human are:
31 pairs
12 pairs
24 pairs
62 pairs
1108. Which of the following is the effect of sympathetic nervous system?
Constriction of bronchi
decrease in heart rate
Promotes digestion or peristalsis
dilates the pupil
1109. Depolarization during conduction of nerve impulse is due to:
Inward movement of Na+
Inward movement of K+
Outward movement of K+
Outward movement of Na+
1110. The nerve impulse which travels from node to node in myelinated neurons is called as:
Resting membrane Potential
Saltatory nerve impulse
Threshold stimulus
Initial nerve impulse
1111. How many sodium ions are pumped out in response to two potassium ions transported into the membrane?
2
3
4
1
1112. Taste buds on the tongue are of:
Pressure Receptors
Chemoreceptors
thermoreceptors
Photoreceptors
1113. If stimulus is above --------,impulses travel to the brain along the sensory neuron.
Action Potential
Threshold potential
Resting potential
Recovery period
1114. The reflex action is the phenomenon which only involves:
Brain,receptors,Spinal cord
Receptors,Neuron,Brain
Receptors,Effectors,Spinal cord
Receptors and effectors
1115. In an action potential the permeability of sodium ions in the neuron increases due to:
Action of acetylcholine sterase enzyme
Opening of sodium channels/gates
Repolarization
Sodium ions forming an ionic bond
1116. There is no clear difference between dendrites and axons in sensory neurons, except:
Thickness
Length
Terminal portions
None of above
1117. In a typical nerve , the action potential duration is:
1 milli second
1 second
1 micro second
1 minute
1118. During resting membrane potential condition:
outer surface of neuron is more positive
inner surface of neuron is more positive
both of these are equally positive
both of these are equally negative
1119. The value of the active membrane potential of the neuron is:
0.01 Volts
0.05 Volts
0.02 Volts
0.07 Volts
1120. The pressure receptors that receive deep pressure stimulus in humans body are called ;
Meissners corpuscles
Paccinian corpuscles
Red blood corpuscles
White blood corpuscles
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