Key Organs of the Circulatory System: Heart, Vessels & Blood
Three organs of the circulatory system are:
- Heart: The heart is a muscular organ that pumps blood throughout the body.
- Blood vessels: Blood vessels are channels through which blood flows. There are three types of blood vessels: arteries, veins, and capillaries.
- Blood: Blood is the fluid that circulates throughout the body, transporting oxygen, nutrients, hormones, and waste products.
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