Answer:
That the old adult Hypothalamus has diminished thermoregulatory activities.
Explanation:
The Hypothalamus is the control center for thermoregulation. receives input from thermal receptors throughout the body. Stimulation of the anterior hypothalamus yields vasodilatation and sweating. Stimulation of the posterior hypothalamus causes shivering. The Hypothalamus of the old age is weakened and can't carry out this function as much as that of the younger ones..