Which of the blowing is the term for me holow passageway in boutresses mough which blood flows? Capilary Lumen Puise

## Step 1<br />The question is asking for the term that refers to the hollow passageway in blood vessels through which blood flows. The options provided are "Capillary", "Lumen", and "Pulse".<br />## Step 2<br />"Capillary" refers to the smallest blood vessels in the body, which connect arterioles to venules and allow the exchange of water, oxygen, carbon dioxide, and many other nutrients and waste substances between blood and surrounding tissues.<br />## Step 3<br />"Pulse" is the rhythmic dilation and constriction of an artery, caused by the beating heart.<br />## Step 4<br />"Lumen" is the inside space of a tubular structure, such as an artery or intestine.<br />## Step 5<br />In this context, the term that refers to the hollow passageway in blood vessels through which blood flows is "Lumen".