Assertion: circulatory system's heart | /r/HasProperty | vessel
Facets:
Source sentences:
text: In the circulatory system, there are three main components that make up the cardiovascular system and assist in its function: the heart, blood and blood vessels which can be further separated into arteries and arterioles, circulatory loops, capillaries, veins (coronary arteries) and venules, coronary arteries and cardiac arteries and hepatic portal circulation (refer to figure 1).
text: The blood vascular system is a closed system in vertebrates, it has a contractile heart and continuous tubes called vessels.