00:01
This question here says which of the following is true of elastic arteries? so let's look at the options.
00:09
Option a says located nearest to the heart, in this case it is true.
00:15
Remember that they are named elastic because they contain high proportion of elastic fibers in their walls, and these elastic fibers allow the arteries to stretch when the heart pumps blood and recoil during relaxation of the heart.
00:34
This stretching and recoiling action helps maintain a relatively constant blood pressure throughout the cardiac cycle, acting as a pressure reservoir.
00:42
In the case of option a, elastic arteries remember that are the largest arteries in the body and are the closest to the heart.
00:51
They are responsible for receiving blood directly from the heart's left ventricle and distributing this blood to smaller arteries throughout the body.
01:00
So you have here for example the aorta artery, the ascending portion, the aortic arc, the descending portion, then you have the carotid arteries, the suclavian arteries that are not as large as the aorta but anyway they continue being large arteries...