Question map
Which of the two given statements is correct? I. It is easier to stop bleeding from a vein than from the artery. II. This is because veins carry deoxygenated blood
Explanation
The correct answer is Option 1.
Statement I is correct because arteries carry blood directly from the heart under high pressure and in pulses. Consequently, an arterial injury leads to rapid, spurting blood loss that is difficult to control. In contrast, veins carry blood at a much lower pressure, resulting in a steady, slower flow that is easier to clot and stop through external pressure.
Statement II is incorrect as a causal explanation for Statement I. While it is true that most veins carry deoxygenated blood (with the exception of the pulmonary vein), the oxygen content of the blood has no bearing on the physical ease of stopping a bleed. The difficulty in stopping a bleed is strictly a function of hemodynamic pressure, not the chemical composition or gas concentration of the blood. Therefore, while Statement II is a true biological fact, it does not explain the phenomenon described in Statement I.