Multiple choice

Arteries are

  1. thin walled and blood flows under diminished pressure

  2. thick walled and blood flows under high pressure

  3. thin walled and blood flows under high pressure

  4. thick walled and blood flows under diminished pressure
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Arteries have thick, muscular walls to withstand high pressure from heart pumping. Blood flows under high pressure. Veins are thin-walled with valves, carrying blood under diminished pressure back to heart.

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