a. atria
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Which part of the heart takes blood from the veins and pumps it into a ventricle?
a. atria
b. valves
c. arteries
d. ventricles
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The following hormone had their receptors in the cell membrane except a-insulin b-tsh c-gh d- cortisol
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Which part of the heart takes blood from the veins and pumps it into a ventricle?
a. atria
a. atria
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