The activity is maybe holding your leg and putting your arm out it could've called the flexible warmer
<span>the diaphragm
It sits right below the lungs and makes the air flow as it contracts :) </span>
Answer: this cool and all but where are the answer choices?
Explanation:
Answer: Refractory period of the cardiac action potential
Explanation:
Unlike the skeletal muscle which can be reactivated before it reaches a contraction, cardiac muscle must wait before it is almost completely relaxed to be activated again (because of its long refractory period), so one cannot make an increase in strength of contraction with a high frequency of stimulations.
