Q1. Which is the largest part of the human brain?
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Answer: C. Cerebrum
The cerebrum is the largest part of the brain and controls thinking, memory and voluntary actions.
Biology - Nervous System Questions for SSC CGL (with Answers)
7 Biology - Nervous System MCQs from the General Awareness section, with answers and short explanations.
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Q2. Involuntary actions such as heartbeat and breathing are controlled by the:
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Answer: C. Medulla oblongata
The medulla oblongata in the hindbrain controls involuntary actions like heartbeat, breathing and blood pressure.
Q3. Reflex actions such as quickly pulling the hand away from a hot object are mainly controlled by the:
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Answer: A. Spinal cord
Reflex arcs pass through the spinal cord, allowing a quick response without the brain's involvement.
Q4. Which part of the brain maintains body balance and posture?
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Answer: D. Cerebellum
The cerebellum coordinates muscle movements and maintains balance and posture.
Q5. The junction between two neurons, across which an impulse passes, is called a:
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Answer: D. Synapse
A synapse is the gap between two neurons where the impulse is passed on by chemical messengers.
Q6. The brain and spinal cord are cushioned by which fluid?
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Answer: C. Cerebrospinal fluid
Cerebrospinal fluid surrounds the brain and spinal cord, protecting them from shocks.
Q7. Which part of a neuron carries the impulse away from the cell body?
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Answer: A. Axon
The axon conducts nerve impulses away from the cell body towards the next neuron or effector.
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