Correct option is B
Sol. The hypothalamus is the principal thermoregulatory center of the brain. It regulates body temperature by receiving signals from peripheral and core thermoreceptors and triggering responses such as sweating, shivering, vasodilation, or vasoconstriction. Damage to the hypothalamus can result in hypothermia or hyperthermia.
Explanation of each option:
· (a) Thalamus – Acts as a relay center for sensory information but does not regulate temperature. It filters and directs signals to appropriate brain regions.
· (b) Hypothalamus – Correct Answer. Located in the diencephalon, it controls autonomic functions, endocrine activity, hunger, thirst, and thermoregulation.
· (c) Basal nuclei – Involved in voluntary motor control and coordination but unrelated to body temperature control.
· (d) Central cortex – Handles higher cognitive functions like reasoning and memory. It does not process or regulate thermal responses.