In Comparing the Bird Circulatory System to the Mammal Circulatory

question 53

Multiple Choice

In comparing the bird circulatory system to the mammal circulatory system,the bird system has

• A)a cross vein in the neck to keep blood flowing to the brain as the head is turned.
• B)a much faster heartbeat.
• C)the right aortic arch,instead of the left as in mammals,leading to the dorsal aorta.
• D)larger arteries to the wings and breast.
• E)All of the choices are correct

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