Examlex
What serves as the positive stimulus in the control of thyroid hormone secretion?
Circulatory System
The body's system of blood vessels and organs that transports blood to and from the heart and transports nutrients, oxygen, carbon dioxide, and hormones throughout the body.
Excretes Waste
The process by which living organisms remove or expel waste materials from their bodies.
Hepatic Portal Vein
A blood vessel that carries blood from the gastrointestinal tract and spleen to the liver, rich in nutrients and toxins.
Nutrient-rich Blood
Blood that is high in oxygen and nutrients, supplied by the circulatory system to feed cells throughout the body.
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