2007 General Studies, all questions

UPSC Prelims 2007 · General Studies

Question 115: Science and Technology

Which one of the following parts of the human brain is the regulating centre for swallowing and vomiting?

aCerebellum
bCerebrum
cMedulla oblongata
dPons

AnswerThe answer is (c).

The medulla oblongata, at the base of the brain stem, is the centre for involuntary reflexes such as swallowing, vomiting, coughing and sneezing, and for the control of heartbeat and breathing. The cerebellum balances movement, the cerebrum handles thought, and the pons relays signals and helps regulate breathing.

Why each option is right or wrong
  • (a) The cerebellum coordinates balance and movement.
  • (b) The cerebrum controls thinking and voluntary action.
  • (c) Correct: the medulla oblongata controls swallowing and vomiting.
  • (d) The pons relays signals and helps regulate breathing.

Explanation: written by UPSC Grade, not by UPSC.

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Source: UPSC, Civil Services (Preliminary) Examination 2007, General Studies. UPSC's own paper isn't online; the words are from a published compilation. The paper on upsc.gov.in.