The thermoregulation of the body is a function of the nervous system, specifically your hypothalamus which is a part of your brain.
The circulatory system or your blood transports oxygen, carbon dioxide, nutrients, and waste products.
The circulatory system also helps maintain homeostasis. For example, your blood pressure. Your circulatory system helps regulate your blood pressure through controlling the rate and force of your heartbeat.
Additionally, your circulatory system also transports hormones and viral antibodies. Hormones are produces by the endocrine system while antibodies are produces by T cells and the hormones and antibodies are released into the bloodstream.
Answers & Comments
CIRCULATORY SYSTEM
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A) Thermoregulation