Question

The walls of blood vessels have two layers of smooth muscle. One layer is lengthwise and the other layer is around the circumference of the vessel. Why is this arrangement important?

Answer 1

will fan anyone

Answer 2

Since smooth muscle contains contractile elements that hold its cells at a certain length, when it is not doing an active contraction and shortening, it tends to maintain its length. So, smooth muscle will not stretch out too much, and will work to keep its length. It can stretch a bit, but it will return to its original length afterward. So smooth muscle provides an elastic function. It also will not rupture under pressure, because its stretchiness is limited, so it also provides a strength function for vessels.

Answer 3

thank you Lena772

Answer 4

You're very welcome :)

Answer 5

but i didnt got the significance of "One layer is lengthwise and the other layer is around the circumference of the vessel."
@Lena772