Question

Which answer includes the correct order of layers starting at the lumen and moving into the tissue?

a. Tunica Media, Tunica Intima, Tunica Adventitia
b. Tunica Intima, Tunia Media, Tunica Adventitia
c. Tunica Adventitia, Tunica Intima, Tunica Media
d. Tunica Adventitia, Tunica Media, Tunica Intima

Answer 1

b. Tunica Intima, Tunica Media, Tunica Adventitia.

Step-by-step explanation:

The Tunica Intima is the layer that is in direct contact with the flowing blood. Meaning that it is the one that faces the lumen of the vessel. Following the Tunica Intima, the vessel has the Tunica Media, and finally after this one, the Tunica Adventitia. The latter is the most external layer.