How does thyroid hormone affect heat production?
A) It causes shivering, which increases warmth.
B) It stimulates metabolism, which increases warmth.
C) It promotes the secretion of catecholamines, which dilates blood vessels and, therefore, increases warmth.
D) It increases the heart rate, which promotes circulation to increase warmth.

Question

Quizplus · Accepted Answer

Thyroid hormone stimulates metabolism, which increases the production of heat in the body. This is known as thermogenesis. Therefore, choice B is the correct answer. Shivering (A) is a non-specific response to cold environments and does not involve thyroid hormone specifically. Promotion of catecholamines (C) and an increase in heart rate (D) can also occur in response to cold environments to increase warmth, but they are not directly related to thyroid hormone.

How Does Thyroid Hormone Affect Heat Production