BioScience Dictionary

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Found Circulatory system 3 times.

Displaying results 1 to 10.

1. Circulatory system
One of eleven major body organ systems in animals; transports oxygen, carbon dioxide, nutrients, and waste products between cells and the respiratory system and carries chemical signals from the endocrine system ; consists of the blood, heart, and blood vessels.

2. Circulatory system, closed
A system that uses a continuous series of vessels of different sizes to deliver blood to body cells and return it to the heart; found in echinoderms and vertebrates .

3. Circulatory system, open
A system in which the circulating fluid is not enclosed in vessels at all times; found in insects, crayfish, some mollusks, and other invertebrates.