<span>DETERIORATE. With aging, heart does not reamin the very efficient pacemaker. The arteries gets deposited with fats, fibrous tissue develops in them, which leads in slowing down of heart. Further, size of heart increases, which leads to more time in filling up of heart. The muscle cells of the heart also deteriorate. Thus, cardiorespiratory fitness deteriorates. </span>
<span>As the person ages, it is notably that his or her levels of cardiorespiratory fitness tend to decline. This is why it is important for one to keep doing the activities that would promote the health of the heart. Also, eating the right food and the avoid the ones that will slowly harm the body. </span>
All the arteries and veins outside the heart<span> and head </span>make up<span> the peripheral vascular </span>system<span>. Hope this helps!!!:)</span>
