Question

question 34 1.67 pts in arteries, the thickest layer of the wall is the tunica externa. none of the answers are correct because all the layers are of the same dimension. tunica adventitia. tunica intima. tunica media.

Explanation:

Arteries have three - layer walls. The tunica media is composed of smooth muscle and elastic fibers and is responsible for the vessel's ability to constrict and dilate. It needs to be thick to withstand high - pressure blood flow, making it the thickest layer.

Answer:

tunica media.