Lect3.pdf
Lect3.pdf
Lect3.pdf
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To adjust blood pressure independently in the<br />
capillaries of the gas-exchange surface and in<br />
the capillaries of the general body circulation, an<br />
organism would need<br />
– A. an open circulatory system.<br />
– B. a hemocoel.<br />
– C. a lymphatic system.<br />
– D. a two-chambered heart.<br />
– E. a four-chambered heart.
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