Most Important 50 MCQs with Solutions
Human Anatomy & Physiology-1 1st Semester Unit 4 Most Important MCQs
Syllabus
Peripheral nervous system:
Classification of the peripheral nervous system, Structure, and functions of the sympathetic and parasympathetic nervous system.
Origin and functions of spinal and cranial nerves.
Special senses:
Structure and functions of eye, ear, nose, and tongue and their disorders.
Multiple Choice Questions
1 ) The nervous system plays a significant role within our body. What is its crucial role?
a ) It increases awareness about the exterior world with the help of sense organs
b ) It renders support in harmonizing and regulating all voluntary muscular activities
c ) It contributes to controlling involuntary activities
d ) All of the above
Ans: d
( 2 ) The nervous system is primarily composed of
a ) Brain and spinal cord
b ) Spinal cord and numerous nerves
c ) Brain, spinal cord, sensory receptors, and numerous nerves
d ) Spinal cord
Ans: c
( 3 ) The neurons or nerve cells are the chief constituents of
a ) Heart
b ) Brain
c ) Lungs
d ) Liver
Ans: b
( 4 ) The cell body, dendrites, and axon constitute the three essential segments of
a ) Neuron
b ) Kidney
c ) Hormones
d ) Spleen
Ans: a
( 5 ) Perikaryon or Cyton is another name of
a ) Blood cells
b ) Dendrites
c ) Axon
d ) Cell body
Ans: d
( 6 ) In comparison to other cells, the cell body possesses all the cell organelles apart from
a ) Chromosomes
b ) Diplosome
c ) Centrosome
d ) Kinetochore
Ans: c
( 7 ) Dendrites perform an essential function in conducting nerve impulses to
a ) Axon
b ) Cyton
c ) Neuron
d ) Cell body
Ans: b
( 8 ) When a white insulating sheath is used for the purpose of enclosing the axon in the majority of the neurons, then it is known as
a ) Myelin sheath
b ) Neurolemma
c ) Nodes of Ranvier
d ) Synaptic clefts
Ans: a
( 9 ) When an external thin sheath is used with an aim of covering the myelin sheath then it is termed as
a ) Bulbs
b ) Collaterals
c ) Neurotransmitters
d ) Neurolemma
Ans: d
( 10 ) The term “ Nodes of Ranvier” literally means
a ) The gaps enclosed by the myelin sheath
b ) The closure of gaps portrayed by the myelin sheath
c )Gaps depicted by the myelin sheath all over the length
d ) None of the above
Ans: c
( 11 ) In the relaxing state, there is the sustenance of a positive charge by the exterior side of the nerve fiber and this is known as
a ) Stable state
b ) Polarised state
c ) Unstable state
d ) Neutral state
Ans: b
( 12 ) Each second, the nerve impulse depicts the ability to travel at the greatest speed of about
a ) 100 meters
b ) 200 meters
c ) 400 meters
d ) 500 meters
Ans: a
( 13 ) The moment the impulse enters the outermost edge of an axon, a chemical is discharged and this chemical is rightly indicated as
a ) Dopamine
b ) Adrenaline
c ) Acetylcholine
d ) Choline
Ans: c
( 14 ) Neurons are classified into several types. What are it’s major types?
a ) Sensory neurons
b ) Motor neurons
c ) Association neurons
d ) All of the above
Ans: d
( 15 ) Which one of the following neurons is responsible for transporting the impulse from the central nervous system toward the direction of an effector?
a ) Connecting neurons
b ) Motor neurons
c ) Sensory neurons
d ) Receptor
Ans: b
( 16 ) Association neurons as the name suggest help in uniting
a ) Sensory and motor neurons
b ) Motor neurons and interneurons
c ) Sensory neurons and multiple sclerosis
d ) Multiple sclerosis and muscular dystrophy
Ans: a
( 17 ) Sensory nerves, motor nerves, and mixed nerves constitute the three main types of
a ) Neurons
b ) Cells
c ) Nerves
d ) Veins
Ans: c
( 18 ) A spinal nerve constitutes one of the most perfect example of
a ) Motor nerves
b ) Sensory nerves
c ) Peripheral nerve
d ) Mixed nerves
Ans: c
( 19 ) Central nervous system and peripheral nervous system represent the two central divisions of
a ) Nervous system
b ) Digestive system
c ) Reproductive system
d ) Respiratory system
Ans: a
( 20 ) What is the full form of CNS?
a ) Central neuron system
b ) Central nervous system
c ) Cardinal nerve system
d ) Central neuro system
Ans: b
( 21 ) There are further subdivisions of PNS that primarily incorporates
a ) Somatic nervous system
b ) Autonomic nervous system
c ) Both the somatic nervous system and autonomic nervous system
d ) None of the above
Ans: c
( 22 ) Which one of the following organs is considered one of the greatest among all animals, in comparison to the size of the body?
a ) Liver
b ) Heart
c ) Kidney
d ) Brain
Ans: d
( 23 ) The brain box acts as a protective shield with an aim of safeguarding the
a ) Brain
b ) Nerves
c ) Neurons
d ) Cells
Ans: a
( 24 ) What is the ideal weight of an individual brain?
a ) 1 kg
b ) 1.35 kg
c ) 2 kg
d ) 2.5 kg
Ans: b
( 25 ) The meninges basically refers to three layers of a membrane which plays a very effective role in protecting the
a ) Chest
b ) Stomach
c ) Spleen
d ) Brain
Ans: d
( 26 ) Dura mater, Arachnoid, and pia mater fall under the category of
a ) Somatic nervous system
b ) Brainbox
c ) Meninges
d ) Autonomic nervous system
Ans: c
( 27 ) The term “ Meningitis” literally means
a ) Inflammatory state of the meninges
b ) Non – inflammatory state of the meninges
c ) Neutral state of the meninges
d ) None of the above
Ans: a
( 28 ) Which one of the following fluids is responsible for safeguarding the brain from any kind of shock?
a ) Intraocular fluid
b ) Cerebrospinal fluid
c ) Vitreous fluid
d ) Ocular fluid
Ans: b
( 29 ) The brain is primarily composed of three major components. What are the three chief components?
a ) Cerebrum, cerebellum, and pia mater
b ) Cerebellum, medulla oblongata, and dura matter
c ) Medulla oblongata, cerebrum, and arachnoid
d ) Cerebrum, cerebellum, and medulla oblongata
Ans: d
( 30 ) Which of the following is regarded as the greatest part of the brain?
a ) Cerebellum
b ) Medulla oblongata
c ) Cerebrum
d ) Ventricles
Ans: c
( 31 ) The splitting of the cerebrum into two hemispheres is popularly termed as
a ) Cerebral hemispheres
b ) Corpus callosum
c ) Cortex
d ) White matter
Ans: a
( 32 ) Cerebellum is also known as
a ) Largest brain
b ) Little brain
c ) Moderate brain
d ) All of the above
Ans: b
( 33 ) Which part of the brain plays a significant role in not only managing the body’s balance but also contributing to harmonizing muscular activities?
a ) Cerebrum
b ) Medulla oblongata
c ) Cerebellum
d ) None of the above
Ans: c
( 34 ) Medulla oblongata contributes to regulating several actions of
a ) Internal organs
b ) Heartbeat
b ) Breathing
d ) All of the above
Ans: d
( 35 ) After taking into account all the parts, the brain is chiefly comprised of three central regions. What are the three crucial regions?
a ) Forebrain, midbrain, and hindbrain
b ) Hindbrain, gray matter, and central canal
c ) Forebrain, midbrain, and white matter
d ) Gyri, sulci, and corpus callosum
Ans: a
( 36 ) Cranial nerves and spinal nerves are two categories of nerves that fall under the sphere of
a ) Autonomic nervous system
b ) Central nervous system
c ) Enteric nervous system
d ) Somatic nervous system
Ans: d
( 37 ) Certain emotions like for example – grief, fear, anger, and sexual stimulation greatly aid in influencing
a ) Sympathetic nervous system
b ) Parasympathetic nervous system
c ) Somatic nervous system
d ) Autonomic nervous system
Ans: d
( 38 ) The word “ reflex” is derived from the Latin word “ reflexus” which simply signifies
a ) Refracted
b ) Reflected or directed back
c ) Emitted
d ) Deflected
Ans: b
( 38 ) In our body, there is an occurrence of two kinds of actions. What are the two major types of actions?
a ) Voluntary actions and involuntary actions
b ) Mandatory actions and voluntary actions
c ) Involuntary actions and discretionary actions
d ) None of the above
Ans: a
( 39 ) As, conditioned reflexes are non – hereditary, due to this reason it is also known as
a ) Natural reflex
b ) Plantar reflex
c ) Acquired reflex
d ) Corneal reflex
Ans: c
( 40 ) Natural reflexes and conditioned reflexes are basically the two vital kinds of
a) Nerves
b ) Neurons
c ) Cells
d ) Reflexes
Ans: d
(41) The falx cerebri developing from the durometer is present between
(a) Brain and spinal cord
(b) Cerebellar hemispheres
(c) Cerebral hemispheres
(d) Subdural and epidural space
Ans: c
(42) Which of the following is the correct order of meninges from the inner side?
(a) Pia mater – arachnoid mater – durometer
(b) Pericardium – myocardium – endocardium
(c) Durometer – pia mater – arachnoid mater
(d) Durometer – arachnoid mater – pia mater
Ans: d
(43) Space that separates arachnoid mater and durometer is ______.
(a) Epidural
(b) Mediastinum
(c) Subdural
(d) Subarachnoid
Ans: c
(44) Neurons are aided by following glial cells except for ______.
(a) Ependymal
(b) Lymphocytes
(c) Oligodendrocytes
(d) Astrocytes
Ans: b
(45) Which of the following structure at a synapse has the neurotransmitter?
(a) Schwan cells
(b) Synaptic cleft
(c) Synaptic knobs
(d) Synaptic vesicles
Ans: d
(46) The action potential while the propagation of a nerve impulse is due to the movement of________.
(a) K+ ions from intracellular to extracellular fluid
(b) K+ ions from extracellular to intracellular fluid
(c) Na+ ions from intracellular to extracellular fluid
(d) Na+ ions from extracellular to intracellular fluid
Ans: d
(47) In the left hemisphere, Broca’s area is related to_______.
(a) Speech
(b) Smell sensation
(c) Impulses received from eyes
(d) Reasoning and learning
Ans: a
(48) As a stimulant of the CNS, cocaine interferes with the reuptake of _________ at synapses
(a) Epinephrine
(b) Dopamine
(c) Acetylcholine
(d) Oxygen
Ans: b
(49) The synaptic vesicles of neuromuscular junction discharge______.
(a) adrenaline
(b) epinephrine
(c) acetylcholine
(d) none of the above
Ans: c
(50) ______________ is the ability of neurons to initiate nerve impulses
(a) myelination
(b) conductivity
(c) irritability
(d) neurotransmission
Ans: c
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