Sarah is resting in a chair for a long period of time;her calf and thigh muscles are totally relaxed.Next to her,Priya is also resting in a chair,but she is wiggling,kicking,tapping,and vibrating her legs;resulting in an pattern where her calf and thigh muscles are alternating between relaxed and contracted states.If all else is equal,who has the higher stroke volume,Sarah or Priya?

Question

Quizplus · Accepted Answer

The alternating contraction and relaxation of Priya's calf and thigh muscles indicate that she is actively pumping blood back to her heart, which increases her stroke volume compared to Sarah, whose muscles are completely relaxed.

Sarah Is Resting in a Chair for a Long Period