Multiple choice

What aids the movement of blood through the veins?

  1. skeletal muscles around the veins

  2. arterial force

  3. cardiac muscle tissue around the veins

  4. smooth muscle tissue inside the veins
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Because blood pressure in veins is low, skeletal muscle contractions squeeze the veins, pushing blood toward the heart, aided by one-way valves.

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