Judge the assertion and the reason

Exercise and reference answers

Questions

1. Reason

   Arteries are closer to the heart and receive blood at far greater pressure.

   Verdict

   Both are true; the reason explains the assertion.

   Assertion

   Arteries have thicker walls than veins.

2. Reason

   Blood pressure is recorded as a ratio of two numbers.

   Verdict

   Both are true; the reason does not explain the assertion.

   Assertion

   Every vessel has a lumen.

3. Reason

   Constriction widens the lumen and lowers blood pressure.

   Verdict

   The assertion is true and the reason is false.

   Assertion

   Vasoconstriction in arteries decreases blood flow.

4. Reason

   An artery is the vessel that carries blood away from the heart.

   Verdict

   The assertion is false and the reason is true.

   Assertion

   Veins carry blood away from the heart.

Instructions

Read both statements, then pick the verdict that fits.

Explanation