The two body systems that work together to regulate body temperature are the nervous system and the endocrine system.
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Nervous System: The hypothalamus, a part of the brain, acts as the body's thermostat. It receives input from temperature receptors throughout the body and initiates responses to help maintain a stable internal temperature. For example, if the body temperature rises, the hypothalamus triggers mechanisms such as sweating and increased blood flow to the skin to promote heat loss.
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Endocrine System: Hormonal regulation plays a crucial role in maintaining body temperature, particularly through hormones like thyroid hormones, which influence metabolic rate and heat production. In addition, the adrenal glands release adrenaline, which can also affect heat production and responses during stress.
Together, these systems help maintain homeostasis by adjusting the body’s temperature in response to internal and external changes.