Question

Which of the following statements are true about the brain?

(i) The thinking part of the brain is the hindbrain.

(ii) Centres of hearing, smell, memory, and sight are in the forebrain.

(iii) Involuntary actions like salivation, vomiting, and blood pressure are controlled by the medulla in the hindbrain

(iv) Cerebellum does not control the posture and balance of the body.

• A. (i) and (ii)
• B. (i), (ii) and (iii)
• C. (ii) and (iii)
• D. (iii) and (iv)

Answer 1

The correct option is C

(ii) and (iii)

The correct option is C (ii) and (iii).

The explanation of the correct options:

1. The main thinking part of the brain is the cerebrum which is a part of the forebrain.
2. The forebrain has different centers of hearing, smell, memory, etc for performing various functions.
3. The medulla oblongata in the hindbrain controls heartbeat, blood pressure, breathing, and digestion.
4. It consists of the cardiac, respiratory, vomiting, and vasomotor centers.

The explanation of the incorrect options :

Option A:

1. The medulla oblongata, pons, and cerebellum are the three parts of the hindbrain.
2. The hindbrain controls the heart rate, breathing, blood pressure, sleep, etc.

Option D:

1. The cerebellum is present in the back of the brain.
2. The cerebellum is responsible for the voluntary movements of skeletal muscles.
3. It also helps in maintaining well as posture, balance, and equilibrium.

Final Answer: The true statements about the brain are that the centers of hearing, smell, memory, and sight are in the forebrain and the involuntary actions like salivation, vomiting, and blood pressure are controlled by the medulla in the hindbrain.