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Nervous System:  The nervous system is made up of the brain, spinal cord and nerves.  The brain sends messages to the heart telling it to beat.  The heart beat pumps blood throughout the body so that nutrients and oxygen can be brought to cells and waste can be removed.
Muscular System: The heart is a muscle.  The expanding and contracting of this muscle is what pumps blood throughout the body.

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1.http://www.livescience.com/22486-circulatory-system.html
2.http://www.newhealthadvisor.com/Circulatory-System-Organs.html

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Other cells in your body have nuclei, but your red blood cells are different, because they contain no nuclei and that's why they can carry more oxygen.

There is no such thing as broken heart after an emotional setback. All you experience is broken heart syndrome characterized by a sudden, temporary weakening of the muscle of your heart.

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Your lungs aren't technically a part of circulatory system organs, but they really help make it possible for your heart to function correctly. Your lungs provide oxygen for your body. The lungs send oxygen-rich blood to the left side of your heart and your heart then uses blood vessels and arteries to transfer it to the rest of your body.

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Our hearts pump blood throughout our bodies and travel through thousands of miles, mainly because it has to move through the network of blood vessels within your body. Our blood is an amazing substance that carries water, nutrients, waste products and oxygen to and from our body cells. A young person will have up to a gallon of blood, whereas an adult will have about 5 quarts of blood.

Red Blood Cells: These cells take oxygen from our lungs and transport it to the rest of our body cells. After delivering the oxygen, it gathers up the carbon dioxide and delivers it back to our lungs.

White Blood Cells: These blood cells play a role in fighting off germs and protects us from diseases. Our body produces more white blood cells to deal with an infection in our bodies.

Platelets: These blood cells help stop bleeding. When we cut ourselves, platelets start accumulating at the opening and plug up the hole to stop bleeding. Once the platelets start sticking to the opening of a damaged blood vessel, they start attracting more fibers, platelets and other blood cells to prevent excessive bleeding.

Plasma: Made in the liver, the liquid part of our blood is called the plasma and about half of our blood is made of this substance. The plasma transports our blood cells and many other components throughout our body.

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The blood vessels are one of the most important circulatory system organs. Your blood vessels allow blood to flow quickly from one region to another and then allow it to come back to your heart. The size of your vessels increases with an increase in the amount of blood that passes through the vessel. Blood vessels have a hollow area that allows for easy flow of blood, it's called lumen. There will be a wall around the lumen, which can be thick as in arteries or thin as in capillaries. All your blood vessels have a thin layer of squamous epithelium that prevents clots from forming. The layer is called endothelium and ensures that your blood cells stay inside the vessels all the time. There are three basic types of blood vessels, including capillaries, arteries and veins. Arteries take oxygen-rich blood away from the heart. veins take blood back to your heart. Capillaries are very tiny blood vessels that form a connection between arteries and veins. The capillary walls facilitate the transfer of oxygen, nutrients and wastes in and out of your body.

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Located slightly to the left of the middle of your chest, the heart is made of strong muscle tissue and is protected by your rib cage. Even though it is no larger than the size of your fist, it plays a vitally important role in your body. It consists of four hollow chambers: two ventricles and two atria. All four chambers work quite like pumps and push blood throughout your body. The blood that moves towards the heart enters it through the atria and then goes out to your body through the ventricles.

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The circulatory system is a vast network of organs and vessels that is responsible for the flow of blood, nutrients, hormones, oxygen and other gases to and from cells. Without the circulatory system, the body would not be able to fight disease or maintain homeostasis.While many see the circulatory system, also known as the cardiovascular system, as simply a highway for blood, it is made up of three independent systems that work together: the heart; lungs; and arteries, veins, coronary and portal vessels.