During a cardiac puncture for terminal blood collection in a rat, where should the needle be directed and why?
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A
Into the right ventricle, because it has the highest blood volume
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B
Toward the left ventricle at the apex, to access the highest-pressure chamber
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C
Into the aorta, to collect oxygenated arterial blood only
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D
Into the superior vena cava for easy access to venous blood