NEET BIOLOGY-NEURAL CONTROL AND COORDINATION is a crucial chapter in NEET Biology that covers the structure and function of the human nervous system, the brain, reflex actions, and sense organs. Mastering this topic is essential for scoring well in NEET, as it is frequently tested through conceptual and application-based MCQs. This section includes carefully selected previous year questions and solved MCQs to help you strengthen your understanding and boost your exam readiness.
NEET MCQs Neural Control and Coordination
- Which one is correct about the physiology of eye?
a) The pressure within the eye (the intraocular pressure) is about 1.5 mm Hg (0.2 kPa)
b) When light is shone in one eye both pupils constrict
c) The pupils dilate when the eye is focused on a near object
d) The aqueous humour is an ultrafiltrate of plasma - Part of ear where sound is transduced is
a) Tympanic membrane b) Malleus, incus and stapes
c) Semi-circular canal d) Cochlea - You are watching a horror movie and you notice your heart is beating fast and mouth is dry. It is
because of
a) Fight and flight response b) Autonomic nervous system
c) Sympathetic nervous system d) Both (a) and (c) - When the stimulus reaches the end of one neuron, it is conducted to the adjacent neuron through
the secretions of
a) Acetaldehyde b) Acetylcholine
c) Acetylcholine esterase d) Acetyl Co-A - The reflex pathway comprises
a) One afferent neuron b) One efferent neuron
c) One afferent and one efferent neuron d) One afferent and one receptor neuron - The highly specialized cells called neurons can
a) Detect stimuli b) Receive stimuli c) Transmit stimuli d) All of the above - If a motor nerve has a conduction velocity of 10 ms−1 , how long will it take an action potential to
reach a muscle 0.75 m from the spinal cord?
a) 75 m b) 1.07 m c) 14 m d) 1.4 m - Which of the following statements are correct about the midbrain?
I. Located between the thalamus/hypothalamus
II. Has a canal named cerebral aqueduct passes through
III. Dorsal part consists of 4 lobes
Choose the correct option
a) I and II b) II and III c) I and III d) I, II and III - Presynaptic neuron and a post-synaptic neuron may or may not be separated by a gap called
a) Synaptic knob b) Neuroreceptor gap c) Synapse d) Synaptic cleft - The band of fibre which joins corpora quadrigemina to cerebellum is called
a) Pons Varolii b) Valve of Vieussens c) Corpus callosum d) Corpus striatum - What kind of neural organization can be seen in lower vertebrates?
a) Simple neural system b) Complex neural system
c) Highly developed neural system d) Very poor neural system - The movement of the nerve impulse across synaptic cleft is primarily
a) A chemical event b) A physical event c) An electrical event d) A biological event
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- During the conduction of nerve impulse, the repolarization occurs with the
a) Influx of K+ ions b) Influx of Na+ ions
c) Efflux of K+ ions d) Efflux of Mg2+ ions - How many pairs of spinal nerve are found in human?
a) 32 b) 31 c) 30 d) 33 - Which of the following are the properties of neural system?
a) Conductivity and elasticity b) Excitability and elasticity
c) Flexibility and excitability d) Excitability and conductivity - Which part of brain controls intellectual ability?
a) Frontal lobe b) Parietal lobe c) Temporal lobe d) Occipital lobe - Which of these processes occur during repolarisation of nerve fibre?
I. Open Na+ channel
II. Closed Na+ channel
III. Closed K+ channel
IV. Open K+ channel
a) II and IV b) I and III c) II and III d) I and II - The middle layer of human eye, choroid contains …A… and looks …B… in colour
Choose the correct option for A, B
a) A-blood vessels, B-bluish b) A-connective tissue, B-redish
c) A-bipolar cells, B-blackish d) A-muscle fibre, B-brownish - Which pair of systems jointly coordinate and integrate all the activities of the organs, so that they function
in a synchronized fashion?
a) Neural and respiratory b) Neural and digestive system
c) Neural and endocrine system d) Neural and circulatory system - Photoreceptor cells that contains the light sensitive proteins are called
a) Rhodopigments b) Photopigments c) Conopigments d) None of these - The specific region of hypothalamus, responsible for physiological sweat secretion is
a) Para-ventricular nucleus b) Supra-optic nucleus
c) Median eminence d) Pars distalis - A 22 years student goes to his ophthalamologist. He has problem in reading books because he is
not be able to contract his
a) Suspensory ligament b) Pupil
c) Iris d) Ciliary muscles - The accumulation of protein called amyloid β−peptide in human brain causes
a) Addison’s disease b) Huntington’s disease
c) Alzheimer’s disease d) Motor-neuron disease - A structure of neuron comprises of
a) Cell body, synaptic knob, ganglia b) Synaptic vesicles, ganglia, dendrites
c) Cell body, dendrites, ganglia d) Cell body, dendrites, axon - The process of response to a peripheral nervous stimulation, that occurs involuntarily is called
a) Reflactory potential b) Action potential c) Reflex action d) Activation potential - The adult human eyeball is nearly a ….. structure
a) Oval b) Circular c) Opaque d) Spherical - The sympathetic and parasympathetic neural system combines to form
a) Somatic neural system b) Autonomic neural system
c) Central neural system d) Peripheral neural system - Choose the correct non-protein amino acid from the given option.
a) Hydroxyproline b) Hydroxylysine
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c) Cystine d) 𝛾-amino butyric acid
- In a man, abducens nerve is injured. Which one of the following function will be affected?
a) Movement of the eye ball b) Swallowing
c) Movement of the tongue d) Movement of the neck - Which of the following parts of a neuron is covered by fatty sheath?
a) Axon b) Cyton c) Dendrite d) Node of Ranvier - The system that transmits impulses from CNS to skeletal muscles is
a) Sympathetic neural system b) Parasympathetic neural system
c) Somatic neural system d) Autonomic neural system - The pressure on either sides of the ear drum gets equalized by
a) Pinna b) Eustachian tube c) Cochlea d) Labyrinth - The diagram given below is the functional organization of the human nervous system. identify 𝐴,𝐵,𝐶,𝐷
and 𝐸 in the figure a) A-PNS, B-CNS, C-ANS, D-Sympathetic nervous system, E-Parasympathetic nervous system
b) A-ANS, B-CNS, C-PNS, D-Sympathetic nervous system, E-Parasympathetic nervous system
c) A-CNS, B-PNS, C-ANS, D-Sympathetic nervous system, E-Parasympathetic nervous system
d) A-ANS, B-PNS, C-ANS, D-Sympathetic nervous system, E-Parasympathetic nervous system - In the resting state of the neural membrane, diffusion due to concentration gradients, if allowed
would drive
a) K+ into the cell b) K+and Na+ out of the cell
c) Na+ into the cell d) Na+ out of the cell - Which is a part of spinal cord?
a) Central canal b) Ventricle c) Ventral canal d) Enterocoel - Mark the following statements as true/false and choose the correct option from the codes given below
I. Neuroglial cells are the packing and supporting cells found in the brain and spinal cord
II. Oligodendrocytes is a category of glial cells that forms myelin sheaths around the axon
III. Microglia provides mechanical support to the neurons
IV. Astrocytes communicate with one another through potassium channels
Codes
I II III IV
a) True True False False b) False True True False
c) False False True True d) True False True False - For quick coordination, our neural system is organized through
a) Organ to organ connections b) Cell to cell connections
c) Point to point connections d) Point to cell connections - Saltatory conduction occurs in
a) Myelinated nerves fibres b) Non-myelinated nerve fibres
c) Liver cells d) All of the above - Action of lysozyme is
a) Physiological b) Anatomical c) Morphological d) None of these - The process through which two or more organs interact and complement the functions of one another, is
called
a) Coordination b) Homeostasis
c) Chemical integration d) Transmission of impulse
- Skeletal muscles are controlled by
a) Sympathetic nerves b) Parasympathetic nerves
c) Somatic nerves d) Autonomic nerves - Yellow spot of eye is known for
a) Complex blood vascular system b) High pigmentation
c) Preponderance of cones d) Possession of abdundant rods - Middle ear of humans contains ossicles, 𝑖.𝑒.,
a) Malleus b) Incus c) Stapes d) All of these - Mechanism of neural coordination involves
a) Transmission of nerve impulse b) Impulse conduction across a synapse
c) Physiology of reflex action d) All of the above - Which converts short time memory into long time remembrance?
a) Reticular system b) Hippocampus c) Thalamus d) Medulla oblongata - 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?
a) First negative, then positive and again back to negative
b) First positive, then negative and continue to be negative
c) First negative, then positive and continue to be positive
d) First positive, then negative and again back to positive - Read the following statements.
I.Preganglionic nerve fibres of III, VII, IX and X cranial nerves are a part of the parasympathetic
nervous system
II.V,VII, IX and X cranial nerves are mixed nerves.
III.Trochlear nerves are the largest cranial nerves.
IV.Abducens nerves are motor nerves and originate from the Gasserian ganglia.
Which of the above statements are correct?
a) I and IV b) I and II c) II and III d) I and III - There are two types of photoreceptor cells, 𝑖.𝑒., …A… and …B… . These cells contains photopigments
Here, A and B refers to
a) A-rods; B-cones b) A-cones; B-rhodopsin
c) A-rhodopsin; B-rods d) A-rods; B-fovea - Which is not a reflex action?
a) Salivation b) Eye opening and closing
c) Response to pinching pin in a frog leg d) Sweating - A nerve impulse is transmitted from one neuron to another through the junctions called
a) Neuromuscular junction b) Neuroreceptor junction
c) Neurosynaptic junction d) Neuroglandular junction - The afferent nerve fibres transmit impulses
a) From tissues/organs to the CNS
b) From the CNS to the smooth muscles
c) From the CNS to the concerned peripheral tissues/organs
d) From the CNS to the involuntary organs - Which of the damaged cells cannot be repaired?
a) Liver cells b) Brain cells c) Bone cells d) Epidermal cells
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- The system that transmits impulse from the CNS to the involuntary organs and smooth muscles of the
body
a) Sympathetic neural system b) Parasympathetic neural system
c) Somatic neural system d) Autonomic neural system - Given is the diagrammatic representation of impulse conduction through an axon (at points A and B). View
the diagram and arrange the steps of impulse conduction
I. The polarity of the membrane at site A is reversed and depolarized, 𝑖.𝑒., the outer surface becomes
negatively charged and the innerside becomes positively charged, generating nerve impulse
II. A stimulus causes disturbance to the membrane at site of A nerve fibre resulting in leakage of Na+ ions
inside the nerve fibre
III. On the outer surface, current flows from site B to site A to complete the circuit of current flow. Hence,
the polarity at the site is reversed, and an action potential is generated at site B. The impulse (action
potential) generated at site A arrives at site B. The sequence is repeated along the length of the axon and
consequently the impulse is conducted
IV. Immediately ahead, the axon (𝑒.𝑔., site B) membrane has a positive charge on the outer surface and a
negative charge on its inner surface. As a result, a current flows on the inner surface from site A to site B
The correct option is
a) I → II → IV → III b) II → I → III → IV c) II → I → IV → III d) I → IV → III → II
- Identify the basic functions of neural system
a) Receiving sensory input from internal and external environment by nerves
b) Processing the input information
c) Responding to stimuli
d) All of the above - How many laminae are present in the grey matter of spinal cord?
a) Four b) Six c) Eight d) Ten - Number of cranial nerves in frog
a) 10 pairs b) 9 pairs c) 12 pairs d) None of these - Given is the diagram of human brain showing meninges. Identify 𝐴 and 𝐶 a) A-Piamater, B-Arachnoid membrane, C-Duramater b) A-Duramater, B-Arachnoid membrane, C-Piamater
c) A-Arachnoid membrane, B-Piamater, C-Duramater d) A-Arachnoid membrane, B-Duramater, C-Piamater - Reflex action is controlled by
a) Sympathetic nervous system b) Autonomous nervous system
c) Spinal cord d) Peripheral nervous system - Vitreous chamber, which is filled by vitreous humor is the space
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a) Behind the lens b) In front of lens
c) between choroid and retina d) between choroid and sclera
- Organ of Corti is found in
a) Heart b) Kidneys c) Inner ear d) Nasal chamber - During repolarisation of nerve
a) K+ gate close and Na+gate opens
b) Na+channels are close and K+ channels are opens
c) Both gates remain open
d) Both K+and Na+ gates are close - Choose the incorrect options regarding white matter of the brain
I. White matter of the brain is white in colour
II. White matter of the brain is white in colour but sometimes it is found to be grey
III. White matter of the brain is mostly formed by medullated nerve fibres
IV. White matter of the brain is formed of cell bodies of nerve fibres
a) I and III b) II and IV c) I and IV d) II and III - Which of the following neuron is also called excitor neuron?
a) Afferent neuron b) Efferent neuron c) Interneuron d) Both (b) and (c) - Brain and spinal cord, combinely form the
a) CNS b) PNS c) Both (a) and (b) d) Neural system - Nerve cells are the part of
a) Epithelial tissue b) Connective tissue c) Muscles tissue d) Nervous tissue - Spinal cord is protected by
a) Trachea b) Aorta c) Sternum d) Vertebral column - A person is wearing spectacles with concave lenses for correcting vision. While not using the glasses, the image
of a distant object in his case will be formed?
a) On the blind spot b) Behind the retina c) In front of retina d) On the yellow spot - On the basis of nature of nerve fibres, the nerves are
a) Medullated and non-medullated nerves b) Myelinated and non-myelinated nerves
c) Sensory, motor and mixed nerves d) Sensory and motor nerves - Which of the following system provides the fastest means of communication within the body?
a) Endocrine system b) Nervous system c) Circulatory system d) Digestive system - The correct sequence of meetings of brain from outside to inside is
a) duramater→arachnoid→piamater b) arachnoid→duramater→piamater
c) piamater→duramater→arachnoid d) duramater→piamater→arachnoid - Which of the following features show antagonism over a particular organ?
Organs Sympathetic Nervous System Parasym pathetic Nervous System a) Gastric glands
Stimulates secretion of gastric juice Reduces bile secretion, increases release of sugar b) Intestinal
glands Decreases secretion of intestinal juice Promotes secretion of intestinal juice
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c) Pancreas Promotes bile secretion Increases storage of sugar as glycogen
d) Salivary glands Stimulates secretion of saliva Inhibits secretion of saliva
- The cutaneous plexus and the papillary plexus consists
a) A network of nerves to provide dermal sensation
b) A network of arteries to provide dermal supply
c) Specialized cells for cutaneous sensations
d) Gland cells that release cutaneous secretions - The velocity of action potential propagation
a) Is independent of an axon’s diameter
b) Depends on the thickness of the myelin around the axon
c) Will be unaffected if the axon becomes demyelinated
d) Is fastest in non-myelinated axons - Anterior choroid plexus is present on the
a) Floor of diencephalon b) Cerebral hemispheres
c) Roof of diencephalon d) Roof of medulla oblongata - Retina of eye is analogous to which part of camera?
a) Shutter b) Lens c) Glass d) Film - In the given diagram, what does ‘A’ represents? a) Pons Varolii b) Cerebellum c) Medulla oblongata d) Midbrain
- …….. is not involved in knee-jerk reflex
a) Muscle spindle b) Motor neuron c) Brain d) Interneurons - Na+−K+ pump is found in membranes of many cells, like nerve cells. It works against
electrochemical gradient and involve of ATP used
a) 3 ions of Na+ are pumped out and 2K+are taken in
b) 3 ions of Na+ are taken in and 2K+are pumped out
c) 2 ions of Na+are thrown out and 3K+ are absorbed
d) 3 ions of K+ are absorbed, 3Na+are pumped out - Synaptic knob is bulb-like structure which is present
a) At the end of axon terminal b) At the node of Ranvier
c) In the cell body d) At the end of dendrites - Autonomic nervous system affects
a) Reflex actions b) Sensory organs c) Internal organs d) None of these - The function of Na+ and K+ pump is to move
a) Na+ in and K+ out b) Na+ out and K+ in c) Na+ out and Cl− in d) Cl− out and Na+ in - The PNS comprises of
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a) Brain b) Spinal cord
c) Both (a) and (b) d) All the nerves of the body associated with the CNS
- Read the following statements carefully and select the correct option
I. The medulla is connected to the spinal cord
II. Medulla contains controlling centres for respiration, cardiovascular reflexes and gastric secretion
III. Cerebellum has very convoluted surface in order to provide the additional space for more neurons
a) Only I b) I and II c) Only III d) I, II and III - The respiratory rhythm centre is present in the
a) Cerebrum b) Cerebellum
c) Hypothalamus d) Medulla oblongata - Which of the following is the correct function of endocrine system with reference to chemical
coordination?
a) Provides neural integration through hormones
b) Provides chemical integration through hormones
c) Provides an organized network of point to point connections for a quick coordination
d) None of the above - Consider the statements as True/False
I. The axoplasm inside the axon contains high concentration of K+ and negatively charged proteins
II. The axoplam inside the axon contains low concentration of Na+
III. The fluid outside the axon contains a low concentration of K+
IV. The fluid outside the axon contains a high concentration of Na+ and negatively charged proteins
The correct option is
a) I-True, II-False, III-False, IV-True b) I-True, II- True, III-False, IV- False
c) I-True, II- True, III- True, IV- False d) I- False, II- True, III-False, IV- False - Maintenance of the ionic gradients across the resting membrane is done by the
a) Active transport of ions b) Passive transport of ions
c) Active transport of proteins d) Passive transport of proteins - How many pairs of cranial nerves are found in humans?
a) 10 pairs b) 11 pairs c) 12 pairs d) 13 pairs - Which part of the brain is involved in loss of control when a person drinks alcohol?
a) Cerebellum b) Cerebrum c) Medulla oblongata d) Pons Varolii - Ependymal cells
a) Ciliated cells b) Type of epithelial cells
c) Lines the cavities of the central nervous system d) All of the above - In the blind spot, where the optic nerves leave the eyes
a) Rods and cones are absent b) Only cones are present
c) Only rods are present d) Special neurons are present - Association areas of the brain are
a) Always sensory areas b) Always motor areas
c) Neither sensory nor motor areas d) None of the above - Study of structure, functions and disease of the nervous system is called
a) Nervology b) Endocrinology c) Neurology d) Endoneurology - Which of the following statements are correct for RAS?
I. It screens sensory information
II. It is important in overall activation and arousal
III. It is concerned with involuntary movements
IV. It is the seat of learning, memory, reasoning and creative ability
a) I and II b) II and III c) II and IV d) I and IV - Which is not a part of hindbrain? a) Thalamus b) Cerebellum c) Pons Varolii d) Medulla
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