carotid arch

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carotid arch

anatomy

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circulatory system

In circulatory system: Amphibians
They are the carotid (the third), systemic (the fourth), and pulmonary (the sixth) arches. Blood to the lungs (and skin in frogs) is always carried by the sixth arterial arch, which loses its connection to the dorsal aorta. All land vertebrates supply their lungs with deoxygenated blood from…
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