Aves (birds) have a closed circulatory system (meaning that the blood never leaves the network of blood vessels; result: faster ATP production, faster excretion of metabolic waste, faster nutrition to cells, etc.)
http://wiki.answers.com/Q/What_type_of_circulatory_syst...
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Birds make up the class Aves of the subphylum Vertebrata, phylum Chordata. Class Aves contains 28 orders, 163 families, 1,975 genera, and nearly 10,000 species. Their distribution is worldwide, including open oceans. ... In addition to lungs, birds possess an accessory system of air sacs connected with the lungs.
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www.novelguide.com/a/discover/ansc_01/ansc_01_00031.htm...
www.novelguide.com/a/discover/ansc_01/ansc_01_00031.html
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Birds (class Aves) are bipedal, warm-blooded, oviparous (egg-laying) vertebrates characterized primarily by ... Birds have four-chambered hearts, and a circulatory system with blood vessels. Birds' high metabolism requires rapid circulation because of the quick build up of waste products, and need for oxygen.
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www.newworldencyclopedia.org/entry/Birds
www.newworldencyclopedia.org/entry/Birds
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The avian heart has evolved into a large and powerful organ with rapid muscular contractions. Generally the smaller the species the larger the relative heart size. Generally birds have hearts larger and ones that beat faster than mammals. ... Avian Circulatory System...
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www.paulnoll.com/Oregon/Birds/Avian-Circulatory.html
www.paulnoll.com/Oregon/Birds/Avian-Circulatory.html
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Birds are members of the Class Aves. ... The circulatory system of birds is similar to that of reptiles, except that the heart has completely separated atria and ventricles, resulting in separate pulmonary and systemic circuits.
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www.snow.edu/allans/biology1320/aves.html
www.snow.edu/allans/biology1320/aves.html
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The cardiovascular system not only delivers oxygen to body cells (and removes metabolic wastes) but also plays an important role in maintaining a bird's body temperature.The avian circulatory system consists of a heart plus vessels that transport:
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people.eku.edu/ritchisong/birdcirculatory.html
people.eku.edu/ritchisong/birdcirculatory.html
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Structures that serve some of the functions of the circulatory system in animals that lack the system. ... There are several types of circulatory systems. The open circulatory system is common to molluscs and arthropods. Open circulatory systems (evolved in insects, mollusks and other invertebrates) pump blood into a...
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bioserv.fiu.edu/~walterm/human_online/cardio_sys/circul...
bioserv.fiu.edu/~walterm/human_online/cardio_sys/circulatory_system.htm
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The circulatory system forms a complex communication and distribution network to all physiologically active tissues of the body. A constant, copious supply of oxygen is required for sustaining the active, heat-producing (endothermous) physiology of the higher vertebrates.
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www.animalaqua.com/circulatory-system-of-mammal/
www.animalaqua.com/circulatory-system-of-mammal/
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Circulatory System, Heart, and Blood ... a. cnidarians b. planarians c. echinoderms 2. One way water flow 3. Exchange through 1-2 cell thickness B. Circulatory System 1. Characteristics of Open AND Closed a. circulatory fluid b. uses vessels c. muscular pump d. hydrostatic psi creates blood psi within the confines of a tube...
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www.neuro.fsu.edu/faculty/fadool/bheart.html
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