Human brain has various parts or regions that help in different actions, responses and coordination. From the following, identify the part responsible for precision of voluntary actions:
Human brain has various parts or regions that help in different actions, responses and coordination. From the following, identify the part responsible for precision of voluntary actions:
Options
B. Cerebellum
Hint
Think of the hind-brain region that lets you walk a straight line or ride a bicycle smoothly.
Analysis & Explanation
The NCERT chapter states directly: 'Think about activities like walking in a straight line, riding a bicycle, picking up a pencil. These are possible due to a part of the hind-brain called the cerebellum. It is responsible for precision of voluntary actions and maintaining the posture and balance of the body.'
- (B) Cerebellum — Correct. It is a part of the hind-brain that fine-tunes and coordinates voluntary muscle activity, giving movements precision, and also maintains posture and balance.
- (A) Cerebrum — Incorrect. The cerebrum is the main thinking part of the fore-brain; it receives sensory impulses, interprets them in association areas, and sends decisions to motor areas that initiate voluntary movement — but it does not refine the precision of that movement.
- (C) Medulla — Incorrect. The medulla, part of the hind-brain, controls involuntary actions such as blood pressure, salivation, vomiting, and heartbeat — not precision of voluntary movement.
- (D) Pons — Incorrect. Pons is not credited with this function in the chapter; it explicitly attributes precision of voluntary actions to the cerebellum.
Common Mistakes
- 1Confusing cerebrum (thinking, decision-making) with cerebellum (precision and coordination of movement).
- 2Confusing cerebellum with medulla, which controls involuntary actions like heartbeat and salivation, not movement precision.
Interesting Facts
Damage to the cerebellum causes a wobbly, uncoordinated gait even though muscle strength is unaffected, showing its role is fine-tuning, not initiating movement.
The cerebellum contains more neurons than the rest of the brain combined despite being a relatively small structure.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2026?
This question carries 1 mark in the CBSE Class 10 Science 2026 examination.
Which chapter does this question come from in Science?
This question is from the chapter "Control and Coordination" in the CBSE Class 10 Science syllabus.
What topic does this question cover in Science?
This question covers the topic "Human Brain — Hind-brain: Cerebellum" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2026 paper?
This is a MCQ question from Section A in the CBSE Class 10 Science 2026 paper.