K224 / K225 / 2027

Transport in humans

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Which route correctly takes blood from the aorta through a kidney and back towards the heart?

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Which feature-function pair best explains a capillary?

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A hormone and urea are travelling in blood. Which component mainly transports both?

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Why can the immune system damage a transplanted organ?

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Which valve prevents backflow from the left ventricle into the left atrium?

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During ventricular ejection, which valve arrangement allows one-way flow?

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What is the most direct effect of a blocked coronary artery on the muscle it supplies?

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Question 1 of 5

Trace two organ routes

Trace blood from the right ventricle through the lungs to the left ventricle, then from the aorta through a kidney to the vena cava. Also name the two vessels entering the liver and the vessel leaving it.

Write each route in order. Keep urine-carrying tubes out of the blood route.

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