Choose the word which is different from the rest.

The answer is A. Nerves.

Nerves are part of the nervous system, which is responsible for controlling the body’s movement, thoughts, and emotions. Arteries are blood vessels that carry oxygen-rich blood away from the heart. Auricles are the two upper chambers of the heart. Valves are structures in the heart that help to keep blood flowing in the right direction. The aorta is the largest artery in the body.

Nerves are different from the other options because they are not part of the circulatory system. The circulatory system

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