Question

Which of the following best describes a major role of the thalamus?
A
It regulates body temperature.
B
It regulates hunger.
It regulates the autonomic nervous system,
D
It relays most sensory signals to the cortex.
E
It relays olfactory signals to the cortex.

Answer 1

Answer:

The thalamus is a small structure within the brain located just above the brain stem between the cerebral cortex and the midbrain and has extensive nerve connections to both. The main function of the thalamus is to relay motor and sensory signals to the cerebral cortex.

Explanation:

Answer 2

The thalamus is a brain structure located between the midbrain and the cerebral cortex. This structure (thalamus) connects the cortex with other brain regions in all directions.

• The statement 'it relays most sensory signals to the cortex.' BEST describes a major role of the thalamus (Option D).

• The cerebral cortex is a layer that covers the surfaces of the cerebral hemispheres.

• The major role of the thalamus is to transmit motor and sensory information to the cerebral cortex.

• The cerebral cortex is associated with higher cognitive processes which include, among others, reasoning, language, emotion and memory.

In conclusion, the statement 'it relays most sensory signals to the cortex.' BEST describes a major role of the thalamus (Option D).

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