Download NEET MCQs for NEET Biology: Neural Control and Coordination
Review structured MCQ sets for NEET Biology Neural Control and Coordination. Built according to official NEET guidelines, these downloadable questions support daily revision and core concept reinforcement.
Chapter-wise Objective Questions: Neural Control and Coordination
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Multiple Choice Questions
(a) C.N.S. to effector
(b) Receptor to C.N.S.
(c) Receptor to effector
(d) Effector to receptor
Show Answer & Explanation
Answer: (b) Receptor to C.N.S.
Explanation:
1. Afferent (sensory) nerve fibres carry impulses from receptors to the central nervous system.
Teacher's Note:
1. Efferent fibres carry impulses from the CNS to effectors.
2. Afferent fibres go from receptor to CNS.
(a) Afferent
(b) Efferent
(c) Motor
(d) None
Show Answer & Explanation
Answer: (a) Afferent
Explanation:
1. Nerves that lead to the central nervous system are afferent nerves.
Teacher's Note:
1. Motor nerves are efferent.
2. Afferent nerves lead to the CNS.
(a) Neuron
(b) Neuroglia
(c) Axon
(d) Cyton
Show Answer & Explanation
Answer: (a) Neuron
Explanation:
1. The neuron is the structural and functional unit of the nervous system.
Teacher's Note:
1. Neuroglia only support neurons.
2. Neuron is the unit.
(a) Nervous system
(b) Endocrine system
(c) Blood
(d) Muscular system
Show Answer & Explanation
Answer: (a) Nervous system
Explanation:
1. The nervous system gives rapid integration of activities through nerve impulses, whereas the endocrine system works slowly through hormones.
Teacher's Note:
1. Both coordinate body functions.
2. Nervous system acts rapidly.
(a) Nervous system
(b) Digestive system
(c) Muscular system
(d) Blood vascular system
Show Answer & Explanation
Answer: (a) Nervous system
Explanation:
1. Dendrites are short branched processes of neurons that receive impulses, so they belong to the nervous system.
Teacher's Note:
1. Axon carries impulse away.
2. Dendrites are part of neurons.
(a) Nervous system only
(b) Digestive system only
(c) Respiratory system only
(d) Both nervous and endocrine system
Show Answer & Explanation
Answer: (d) Both nervous and endocrine system
Explanation:
1. Both the nervous system and the endocrine system carry out intercellular communication, by impulses and hormones.
Teacher's Note:
1. One is fast, the other slow.
2. Both systems communicate.
(a) presynaptic neuron
(b) post synaptic neuron
(c) synaptic cleft
(d) none of these
Show Answer & Explanation
Answer: (a) presynaptic neuron
Explanation:
1. Synaptic vesicles containing neurotransmitter lie in the axon terminal of the presynaptic neuron.
Teacher's Note:
1. They release transmitter into the cleft.
2. Vesicles are in the presynaptic neuron.
(a) nodes of Ranvier
(b) synaptic cleft
(c) synaptic knob
(d) neural plate
Show Answer & Explanation
Answer: (a) nodes of Ranvier
Explanation:
1. Gaps between adjacent myelin sheaths of a myelinated axon are nodes of Ranvier.
Teacher's Note:
1. Impulse jumps from node to node.
2. Gaps are nodes of Ranvier.
(a) liver cells
(b) nerve cells
(c) kidney
(d) heart RCISE NERVE IMPULSE CONDUCTION
Show Answer & Explanation
Answer: (b) nerve cells
Explanation:
1. Nissl's granules are clumps of rough endoplasmic reticulum and ribosomes in the cell body of nerve cells.
Teacher's Note:
1. They make proteins.
2. Nissl granules are in nerve cells.
(a) Filled with acetyl choline
(b) Negatively charged
(c) Positively charged
(d) Neutral
Show Answer & Explanation
Answer: (c) Positively charged
Explanation:
1. When a nerve fibre is stimulated, Na+ enters and the inside of the membrane becomes positively charged (depolarisation).
Teacher's Note:
1. It was negative at rest.
2. Inside turns positive.
(a) Adrenaline
(b) Phosphorus
(c) Sodium ions
(d) Potassium ions
Show Answer & Explanation
Answer: (c) Sodium ions
Explanation:
1. A nerve impulse begins when the membrane becomes more permeable to sodium ions, which rush in.
Teacher's Note:
1. Later K+ moves out.
2. Na+ permeability triggers the impulse.
(a) Action potential
(b) Resting potential
(c) Active potential
(d) Differential potential
Show Answer & Explanation
Answer: (b) Resting potential
Explanation:
1. At rest the outer surface is positive and the inner surface negative, which is the resting potential.
Teacher's Note:
1. The action potential reverses polarity.
2. This is resting potential.
(a) Equal amount of Na+ & K+ move out across axolema
(b) Na+ move inside
(c) More Na+ outside
(d) None
Show Answer & Explanation
Answer: (b) Na+ move inside
Explanation:
1. Depolarisation of the axolemma is due to rapid inflow of Na+ ions.
Teacher's Note:
1. Repolarisation is due to K+ outflow.
2. Na+ influx depolarises.
(a) K+ and Na+ out of the cell
(b) Na+ into the cell
(c) Na+ out of the cell
(d) K+ into the cell
Show Answer & Explanation
Answer: (b) Na+ into the cell
Explanation:
1. At rest Na+ is more concentrated outside, so by diffusion it would tend to enter the cell.
Teacher's Note:
1. The Na+-K+ pump maintains the gradient.
2. Na+ would diffuse in.
(a) Influx of Na+
(b) Influx of K+
(c) Efflux of Na+
(d) Efflux of K+
Show Answer & Explanation
Answer: (d) Efflux of K+
Explanation:
1. Repolarisation occurs when K+ ions leave the neuron, restoring the positive outside.
Teacher's Note:
1. Na+ channels close.
2. K+ efflux repolarises.
(a) Dendron
(b) Axon hillock
(c) Telodendria
(d) Soma
Show Answer & Explanation
Answer: (c) Telodendria
Explanation:
1. The presynaptic membrane is the membrane of the telodendria, the end branches of the axon.
Teacher's Note:
1. It holds the synaptic vesicles.
2. Axon terminal forms presynaptic membrane.
(a) Two cerebral hemisphere
(b) Two optic lobes
(c) Two olfactory lobes
(d) Optic chiasma
Show Answer & Explanation
Answer: (a) Two cerebral hemisphere
Explanation:
1. The corpus callosum is a bundle of fibres connecting the two cerebral hemispheres.
Teacher's Note:
1. It is in the forebrain.
2. It joins the cerebral hemispheres.
(a) Choroid
(b) Duramater
(c) Piamater
(d) Arachnoid
Show Answer & Explanation
Answer: (b) Duramater
Explanation:
1. The outermost meninx of the brain is the thick dura mater.
Teacher's Note:
1. Pia mater is innermost.
2. Dura mater is outermost.
(a) Inner most meninge
(b) Middle meninge
(c) Outer meninge
(d) None
Show Answer & Explanation
Answer: (a) Inner most meninge
Explanation:
1. Pia mater is the thin innermost meninx, in contact with the brain tissue.
Teacher's Note:
1. Arachnoid is the middle layer.
2. Pia mater is innermost.
Practice MCQs for NEET Biology Neural Control and Coordination
Download Multiple Choice Questions: Neural Control and Coordination (NEET Biology)
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FAQs
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