What does circulatory system mean?

Definitions for circulatory system
cir·cu·la·to·ry sys·tem

This dictionary definitions page includes all the possible meanings, example usage and translations of the word circulatory system.

Princeton's WordNet

  1. circulatory system, cardiovascular systemnoun

    the organs and tissues involved in circulating blood and lymph through the body


  1. circulatory systemnoun

    The parts of a animal body comprising the heart, veins, capillaries and arteries.

  2. circulatory systemnoun

    The parts of a machine responsible for the circulation of some fluid.


  1. Circulatory system

    The blood circulatory system is a system of organs that includes the heart, blood vessels, and blood which is circulated throughout the entire body of a human or other vertebrate. It includes the cardiovascular system, or vascular system, that consists of the heart and blood vessels (from Greek kardia meaning heart, and from Latin vascula meaning vessels). The circulatory system has two divisions, a systemic circulation or circuit, and a pulmonary circulation or circuit. Some sources use the terms cardiovascular system and vascular system interchangeably with the circulatory system.The network of blood vessels are the great vessels of the heart including large elastic arteries, and large veins; other arteries, smaller arterioles, capillaries that join with venules (small veins), and other veins. The circulatory system is closed in vertebrates, which means that the blood never leaves the network of blood vessels. Some invertebrates such as arthropods have an open circulatory system. Diploblasts such as sponges, and comb jellies lack a circulatory system. Blood is a fluid consisting of plasma, red blood cells, white blood cells, and platelets that is circulated around the body carrying oxygen and nutrients to the tissues, and waste materials away. Circulated nutrients include proteins and minerals, other components transported are gases such as oxygen, and carbon dioxide, hormones, and hemoglobin; providing nourishment, help in the immune system to fight diseases, and in maintaining homeostasis by stabilizing temperature and natural pH. In vertebrates, complementary to the circulatory system is the lymphatic system. This system carries excess plasma filtered from the capillaries as interstitial fluid between cells, away from the body tissues in an accessory route to return the excess fluid back to the blood circulation as lymph. The passage of lymph takes much longer than that of blood. The lymphatic system is a subsystem that is essential for the functioning of the blood circulatory system; without it the blood would become depleted of fluid. The lymphatic system works together with the immune system. Unlike the closed circulatory system, the lymphatic system is an open system. Some sources describe it as a secondary circulatory system. The circulatory system can be affected by many cardiovascular diseases. Cardiologists are medical professionals which specialise in the heart, and cardiothoracic surgeons specialise in operating on the heart and its surrounding areas. Vascular surgeons focus on disorders of the blood vessels, and lymphatic vessels.


  1. circulatory system

    The circulatory system, also known as the cardiovascular system, refers to the complex transportation network in living organisms that is responsible for the movement of oxygen, nutrients, hormones, and other essential substances throughout the body. It comprises the heart, blood vessels such as arteries, veins, and capillaries, and blood, which carries cells, nutrients, waste products, antibodies, and hormones. This network assists in fighting diseases, stabilizing body temperature and pH, and maintaining homeostasis.


  1. Circulatory system

    The circulatory system is an organ system that permits blood and lymph circulation to transport nutrients, oxygen, carbon dioxide, hormones, blood cells, etc. to and from cells in the body to nourish it and help to fight diseases, stabilize body temperature and pH, and to maintain homeostasis. This system may be seen strictly as a blood distribution network, but some consider the circulatory system as composed of the cardiovascular system, which distributes blood, and the lymphatic system, which returns excess filtered blood plasma from the interstitial fluid as lymph. While humans, as well as other vertebrates, have a closed cardiovascular system, some invertebrate groups have an open cardiovascular system. The more primitive, diploblastic animal phyla lack circulatory systems. The lymphatic system, on the other hand, is an open system providing an accessory route for excess interstitial fluid to get returned to the blood. Two types of fluids move through the circulatory system: blood and lymph. Lymph is essentially recycled blood plasma after it has been filtered from the blood cells and returned to the lymphatic system. The blood, heart, and blood vessels form the cardiovascular system. The lymph, lymph nodes, and lymph vessels form the lymphatic system. The cardiovascular system and the lymphatic system collectively make up the circulatory system.

Suggested Resources

  1. circulatory system

    Song lyrics by circulatory system -- Explore a large variety of song lyrics performed by circulatory system on the Lyrics.com website.

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How to pronounce circulatory system?

How to say circulatory system in sign language?


  1. Chaldean Numerology

    The numerical value of circulatory system in Chaldean Numerology is: 8

  2. Pythagorean Numerology

    The numerical value of circulatory system in Pythagorean Numerology is: 3

Examples of circulatory system in a Sentence

  1. Bich Tran:

    Our body can heal itself, within 12 hours or few days after the smoking, the level of carbon monoxide in blood will decline and the circulatory system will start repairing the damage.

  2. Alex Viada:

    That just wipes you out, less intense work builds your endurance, gives you adaptations that help improve your heart, nervous system, and circulatory system function, and allows you to recover from intense workouts. It’s much more sustainable than intense work.

Translations for circulatory system

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"circulatory system." Definitions.net. STANDS4 LLC, 2024. Web. 18 May 2024. <https://www.definitions.net/definition/circulatory+system>.

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