Answer: The SA node
Answer choices are:
<span>A. </span>The AV node
<span>B. </span>The SA node
<span>C. </span>The purkinje fibers
<span>D. </span>The AV bundle
The SA node<span> is the heart's natural pacemaker consisting of a cluster of cells located in the upper part of the wall of the right atrium. (the right upper chamber of the heart). The electrical impulses are produced and sent out from there to regulate heartbeat. This is also called the sinus code. </span>
Answer:
The adaptations of desert plants to prevent water loss are small, modified leaves, a thick waxy cuticle, water storage capability, and dormancy during
Answer: Hey There! ^^
The reaction that causes a firework to explode requires less energy to start, and occurs more rapidly than the reaction that causes a candle to burn
Explanation:
! ^^
The 4 main points I’m not sure what u mean but if u refrase it
