Human Body quiz
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Why is the left ventricle wall much thicker than the right ventricle?
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More questions about Human Body
These visible examples show the question style. LearnClash turns the full topic into ranked duels and spaced repetition.
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What is the largest artery in the human body?
Answer: Aorta
Why: The aorta can reach over an inch in diameter at its root and handles blood under peak systolic pumping pressure.
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How many major blood groups form the standard human ABO classification system?
Answer: Four
Why: Landsteiner's 1901 paper listed only three groups; the fourth, AB, was found in 1902 by his colleagues Decastello and Sturli.
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Running diagonally down the anterior thigh, what is the longest muscle in the human body?
Answer: Sartorius
Why: Spanning both hip and knee joints, the sartorius flexes and laterally rotates the thigh.
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How does sweating actually lower the human body’s internal temperature?
Answer: Evaporative cooling
Why: A litre of sweat removes about 580 kcal, but only while it evaporates; sweat that drips off the skin cools nothing.
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What flexible tissue connects human bones to other bones?
Answer: ligaments
Why: More than 900 ligaments tie bone to bone in the body, while tendons are the similar cords that pull muscle against bone.
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Why does the human face have a philtrum above the upper lip?
Answer: To join facial pieces during development
Why: The two halves of the upper lip fuse there in the womb, and a fusion that fails leaves a cleft lip.
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