Name the parts of hind-brain of the human brain. Which part of the hind-brain controls involuntary actions such as blood pressure and salivation?
Name the parts of hind-brain of the human brain. Which part of the hind-brain controls involuntary actions such as blood pressure and salivation?
The hind-brain consists of three parts: the pons, the medulla, and the cerebellum. The medulla (part of the hind-brain) controls involuntary actions such as blood pressure, salivation and vomiting.
Hint
The chapter names the part of the hind-brain responsible for precision of voluntary actions separately from the part controlling involuntary actions like blood pressure and salivation.
Analysis & Explanation
According to the chapter (section 6.1.2, Human Brain), the brain has three major parts: the fore-brain, mid-brain and hind-brain. The hind-brain includes the pons, medulla and cerebellum.
The text explicitly states: 'All these involuntary actions including blood pressure, salivation and vomiting are controlled by the medulla in the hind-brain.' Thus the medulla is the specific part of the hind-brain responsible for regulating these involuntary actions.
The chapter also describes the cerebellum, another part of the hind-brain, as being 'responsible for precision of voluntary actions and maintaining the posture and balance of the body' — for example, walking in a straight line, riding a bicycle, or picking up a pencil. This is distinct from the medulla's role and should not be confused with it.
Common Mistakes
- 1Naming only the fore-brain parts (cerebrum) instead of the hind-brain parts asked for.
- 2Attributing blood pressure and salivation control to the cerebellum instead of the medulla — the cerebellum controls posture, balance and precision of voluntary movements, not these involuntary actions.
Interesting Facts
Damage to the medulla can be immediately life-threatening because it controls basic life-sustaining functions like breathing, heart rate, and blood pressure.
The cerebellum, though much smaller than the fore-brain (cerebrum), contains a very large fraction of the total number of neurons in the brain.
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Frequently Asked Questions
How many marks does this question carry in CBSE Class 10 Science 2025?
This question carries 2 marks in the CBSE Class 10 Science 2025 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" from CBSE Class 10 Science.
What type of question is this in the CBSE Class 10 Science 2025 paper?
This is a Very Short Answer question from Section B in the CBSE Class 10 Science 2025 paper.