Author Question: Which is one of the three layers of the arterial walls? a. Semilunar b. Popliteal c. Intima d. ... (Read 51 times)

tth · **on:** Jul 18, 2018

Which is one of the three layers of the arterial walls?

a. Semilunar
b. Popliteal
c. Intima
d. Mediastinal

Question 2

Pulmonary arteries carry oxygenated blood to the lungs.

Indicate whether the statement is true or false.

ririgirl15 · **Reply #1 on:** Jul 18, 2018

Answer to Question 1

ANS: C
The three layers of the arterial walls are the intima, media, and adventitia. The innermost layer is the intima (tunica intima), a single layer of endothelial cells on a thin matrix of hyaluronic acid, collagen, and elastic fibers. The middle layer is the media (tunica media, or yellow fibrous). The outermost layer is the adventitia (tunica adventitia, or white fibrous connective tissue).

Answer to Question 2

ANS: F
Pulmonary arteries carry deoxygenated blood to the lungs and the pulmonary veins carry oxygenated blood to the heart.