Question

Select the correct statement(s) with regard to brain.
A. Thalamus is the major coordinating centre for sensory and motor signaling.
B. Cerebral hemispheres are connected by corpus callosum.
C. Corpora quadrigemina are present in the midbrain.
D. The pneumotaxic centre controlling the respiration rate is located in the cerebellum.

• A. A and B only
• B. A, B and C
• C. A, B and D
• D. D only

Answer 1

The correct option is B A, B and C

Thalamus is mass of grey matter located at the base of cerebrum in the wall of third ventricle. It serves as relay station for sensory impulses as well as integration centre for recognition of pain, temperature and hard touch.

Corpus callosum is a bridge of white matter that connects two cerebral hemispheres.

Corpora quadrigemina is present at the posterior surface of midbrain and consists of two superior and two inferior colliculi; hence the name quadrigemina.

Pneumotaxic centres are located bilaterally in upper pons and serve to shorten the inspiration and thereby causing shallow and more rapid respiratory patterns by inhibiting apneustic centre.

Therefore, the correct answer is option A.