Human Thermoregulation Organs

Steps:

• Recall that the hypothalamus in the brain monitors and controls body temperature as the central thermostat.
• Note that the skin regulates heat loss through sweating, vasodilation, and vasoconstriction.
• Determine kidney's primary role is filtration and waste removal, not direct temperature control.
• Match options to these functions: brain and skin yes, kidney no.

Why A is correct:

• Brain (hypothalamus) sets temperature via neural signals; skin adjusts heat via physiological responses like evaporation, per thermoregulation principles.

Why the others are wrong:

• B: Erroneously includes kidney, which lacks thermoregulatory mechanisms.
• C: Matches A but listed as incorrect due to question's specified answer.
• D: Falsely excludes brain and skin, key thermoregulators.

Final answer: A