Q1
The basic functional unit of the nervous system is the:
📝 SolutionThe neuron (nerve cell) is the structural and functional unit of the nervous system, specialised to receive and transmit nerve impulses.
Q2
The gap between two neurons where a nerve impulse passes chemically is called the:
📝 SolutionThe synapse is the junction between the axon end of one neuron and the dendrite of the next; the impulse crosses it via chemicals (neurotransmitters).
Q3
The part of a neuron that receives signals from other neurons is the:
📝 SolutionDendrites are the branched extensions of a neuron that receive nerve impulses from neighbouring neurons.
Q4
A sudden, automatic response to a stimulus, bypassing conscious thought, is called a:
📝 SolutionA reflex action is a rapid, involuntary response to a stimulus, controlled by the spinal cord to allow quick reaction, e.g. withdrawing a hand from a hot object.
Q5
The path along which a nerve impulse travels during a reflex action is called the:
📝 SolutionThe reflex arc is the pathway of a reflex action: receptor → sensory neuron → spinal cord → motor neuron → effector.
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Class 10 · Science
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