question_answer 1) Sympathetic nervous system induces: [AIPMT 1999]
A)
heart-beat
done
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B)
secretion of digestive juices
done
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C)
secretion of saliva
done
clear
D)
all of die above
done
clear
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question_answer 2) Which cranial nerve has the highest number of branches? [AIPMT 1999]
A)
Facial nerve
done
clear
B)
Trigeminal
done
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C)
Vagus nerve
done
clear
D)
None of these
done
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question_answer 3) Which of the following is regarded as a unit of nervous tissue? [AIPMT 1999]
A)
Myelin sheath
done
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B)
Axons
done
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C)
Dendrites
done
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D)
Neurons
done
clear
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question_answer 4) The junction between the axon of one neuron and the dendrite of the next is called: [AIPMT 1999]
A)
junction point
done
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B)
a synapse
done
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C)
a joint
done
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D)
constant bridge
done
clear
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question_answer 5) Which of the following statement is correct about node of ranvier? [AIPMT 2002]
A)
Axolemma is discontinuous
done
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B)
Myelin sheath is discontinuous
done
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C)
Both neurilemma and myelin sheath are discontinuous
done
clear
D)
Covered by myelin sheath
done
clear
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question_answer 6) What used to be described as Nissl granules in a nerve cell are now identified as? [AIPMT 2003]
A)
Ribosomes
done
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B)
Mitochondria
done
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C)
Cell metabolites
done
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D)
Fat granules
done
clear
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question_answer 7) Injury to vagus nerve in human is not likely to affect: [AIPMT (S) 2004]
A)
tongue movements
done
clear
B)
gastrointestinal movements
done
clear
C)
pancreatic secretion
done
clear
D)
cardiac movements
done
clear
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question_answer 8) In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed, would drive: [AIPMT (S) 2004]
A)
\[{{K}^{+}}\]into the cell
done
clear
B)
\[{{K}^{+}}\]and \[N{{a}^{+}}\]out of the cell
done
clear
C)
\[N{{a}^{+}}\]into the cell
done
clear
D)
\[N{{a}^{+}}\] out of the cell
done
clear
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question_answer 9) In a man, abducens nerve is injured. Which one of the following functions will be affected? [AIPMT (S) 2005]
A)
Movement of the eye ball
done
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B)
Swallowing
done
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C)
Movement of the tongue
done
clear
D)
Movement of the neck
done
clear
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question_answer 10) One of the examples of the action of the autonomous nervous system is: [AIPMT (S) 2005]
A)
knee-jerk response
done
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B)
pupillary reflex
done
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C)
swallowing of food
done
clear
D)
peristalsis of the intestines
done
clear
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question_answer 11) Parkinson's disease (characterized by tremors and progressive rigidity of limbs) is caused by degeneration of brain neurons that are involved in movement control and make use of neurotransmitter: [AIPMT (S) 2005]
A)
acetylcholine
done
clear
B)
norepinephrine
done
clear
C)
dopamine
done
clear
D)
GABA
done
clear
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question_answer 12) Four healthy people in their twenties got involved in injuries resulting in damage and death of a few cells of the following. Which of the cells are least likely to be replaced by new cells? [AIPMT (S) 2005]
A)
Osteocytes
done
clear
B)
Malpighian layer of the skin
done
clear
C)
Liver cells
done
clear
D)
Neurons
done
clear
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question_answer 13) During the transmission of nerve impulse through a nerve fibre, the potential on the inner side of the plasma membrane has which type of electric charge? [AIPMT (S) 2007]
A)
First negative, then positive and again back to negative
done
clear
B)
First positive, then negative and continue to be negative
done
clear
C)
First negative, then positive and continue to be positive
done
clear
D)
First positive, then negative and again back to positive
done
clear
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question_answer 14) Which one of the following pairs of structures distinguishes a nerve cell from other types of cell? [AIPMT (S) 2007]
A)
Perikaryon and dendrites
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B)
Vacuoles and fibres
done
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C)
Flagellum and medullary sheath
done
clear
D)
Nucleus and mitochondria
done
clear
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question_answer 15) During the propagation of a nerve impulse, the action potential results from the movement of [AIPMT (S) 2008]
A)
\[{{K}^{+}}\]ions from extracellular fluid to intracellular fluid
done
clear
B)
\[N{{a}^{+}}\]ions from intracellular fluid to extracellular fluid
done
clear
C)
\[{{K}^{+}}\]ions from intracellular fluid to extracellular fluid
done
clear
D)
\[N{{a}^{+}}\] ions from extracellular fluid to intracellular fluid
done
clear
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question_answer 16) Which part of human brain is concerned with the regulation of body temperature? [AIPMT (S) 2009]
A)
Medulla oblongata
done
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B)
Cerebellum
done
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C)
Cerebrum
done
clear
D)
Hypothalamus
done
clear
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question_answer 17) Select the answer with correct matching of the structure, its location and function. [AIPMT (M) 2010]
A)
Structure Location Function Eustachian tube Anterior part of internal ear Equalizes air pressure on either sides of tympanic membrane
done
clear
B)
Cerebellum Mid brain Controls respiration and gastric secrietions
done
clear
C)
Hypothalamus Forebrain Controls body temperature, urge for eating and drinking
done
clear
D)
Blind spot Near the place where opt nerve leaves eye Rods and cones are present but inactive here
done
clear
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question_answer 18) When a neuron is an resting state, ie, not conducting any impulse, the axonal membrane is [AIPMT (S) 2011]
A)
equally permeable to both \[N{{a}^{+}}\] and \[{{K}^{+}}\] ions
done
clear
B)
impermeable to both \[N{{a}^{+}}\] and \[{{K}^{+}}\] ions
done
clear
C)
comparatively more permeable to \[{{K}^{+}}\] ions and nearly impermeable to \[N{{a}^{+}}\] ions
done
clear
D)
comparatively more permeable to \[N{{a}^{+}}\] ions and nearly impermeable to \[{{K}^{+}}\]ions
done
clear
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question_answer 19) The human hindbrain comprises three parts, one of which is [AIPMT (S) 2012]
A)
spinal cord
done
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B)
corpus callosum
done
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C)
cerebellum
done
clear
D)
hypothalamus
done
clear
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question_answer 20) A person entering an empty room suddenly finds a snake right in front on opening the door. Which one of the following is likely to happen in his neurohormonal control system? [AIPMT (S) 2012]
A)
Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal medulla
done
clear
B)
Neurotransmitters diffuse rapidly across the cleft and transmit a nerve impulse
done
clear
C)
Hypothalamus activates the parasympathetic division of brain
done
clear
D)
Sympathetic nervous system is activated releasing epinephrine and norepinephrine from adrenal cortex
done
clear
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question_answer 21)
A diagram showing axon terminal and synapse is given. Identify correctly at least two of A-D [NEET 2013]
A)
A Receptor C Synaptic vesicles
done
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B)
B Synaptic connection D K+
done
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C)
A Neurotransmitter S Synaptic cleft
done
clear
D)
C Neurotransmitter D Ca2+
done
clear
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question_answer 22) How do parasympathetic neural signals affect the working of the heart? [NEET 2014]
A)
Reduce both heart rate and cardiac output
done
clear
B)
heart rate is increased without affecting the cardiac output
done
clear
C)
Both heart rate and cardiac output increase
done
clear
D)
Heart rate decreases but cardiac output increases
done
clear
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question_answer 23) Stimulation of a muscle fibre by a motor neuron occurs at [NEET 2014]
A)
the neuromuscular junction
done
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B)
the transverse tubules
done
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C)
the myofibril
done
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D)
the sacroplasmic reticulum
done
clear
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question_answer 24) Which of the following regions of the brain is incorrectly paired with its function [NEET [C] 2015]
A)
Medulla oblongata-Homeostatic control
done
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B)
Cerebellum-Language comprehension
done
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C)
Corpus callosum-Communication between the left and right cerebral cortices
done
clear
D)
Cerebrum-Calculation and contemplation
done
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question_answer 25) Destruction of the anterior horn cells of the spinal cord would result in loss of [NEET (Re) 2015]
A)
sensory impulses
done
clear
B)
voluntary motor impulses
done
clear
C)
commissural impulses
done
clear
D)
integrating impulses
done
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question_answer 26) Receptor sites for neurotransmitters are present on [NEET-2017]
A)
Post-synaptic membrane
done
clear
B)
Membranes of synaptic vesicles
done
clear
C)
Pre-synaptic membrane
done
clear
D)
Tips of axons
done
clear
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question_answer 27) Myelin sheath is produced by [NEET-2017]
A)
Osteoclasts and Astrocytes
done
clear
B)
Schwann Cells and Oligodendrocytes
done
clear
C)
Astrocytes and Schwann Cells
done
clear
D)
Oligodendrocytes and Osteoclasts
done
clear
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question_answer 28) Which of the following structures or regions is incorrectly paired with its functions? [NEET - 2018]
A)
Hypothalamus: production of releasing hormones and regulation of temperature, hunger and thirst.
done
clear
B)
Limbic system: consists of fibre tracts that interconnect different regions of brain; controls movement.
done
clear
C)
Medulla oblongata: controls respiration and cardiovascular reflexes.
done
clear
D)
Corpus callosum: band of fibers connecting left and right cerebral hemispheres.
done
clear
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question_answer 29) Nissl bodies are mainly composed of [NEET - 2018]
A)
Nucleic acids and SER
done
clear
B)
DNA and RNA
done
clear
C)
Proteins and lipids
done
clear
D)
Free ribosomes and RER
done
clear
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