The circulatory system
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- Good morning students! Today we are going to talk about the Circulatory system. Does anyone know the organs that make up the circulatory system?
- Yes! Oxygenated blood is carried away from the heart and towards organs in arteries.
- These narrow to arterioles and then capillaries as they pass through the organ.
- In the organs, respiring cells use up the oxygen from the blood.
- The capillaries widen to venules and finally veins as they move away from the organs
- Last, Veins carry deoxygenated blood back towards the heart.
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