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Started by iphone2020
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iphone2020

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Hello everyone this question mention amphibian have close circulatory system! I though amphibian are open and Annalides are close!!!! Please clear this for me!!!


Thanks


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From what I have been studying, annelids do have a closed circulatory system. But amphibians are chordates, and most chordates have closed circulatory systems
 
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iphone2020 said:
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Hello everyone this question mention amphibian have close circulatory system! I though amphibian are open and Annalides are close!!!! Please clear this for me!!!


Thanks


Sent from my iPhone using SDN mobile
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Amphibians have 2 types of circulatory systems, one between the heart and lungs a (pulmonary circulation) another is systemic circulation- through the rest of the body including the brain.
Pulmonary is usually the closed circulatory system, however the systemic circulation is open because Oxygen can diffuse from the moist environment through the skin.

Hope this helps.
 
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