Question

question 27
1 pts
figure 20.1
use the diagram above to answer the following questions.
identify the letter that indicates the blood vessel layer that is comprised of circular and longitudinal smooth muscle.
a
b
c
d
e

Explanation:

In blood vessels, the tunica media (the middle layer) is composed of circular and longitudinal smooth muscle. In typical vascular diagrams, this layer is often labeled as a specific part. Assuming the standard labeling (where A might be the lumen, B the tunica intima, C the tunica media, D the tunica externa, and E related to the vessel's connection or another structure not the muscle - containing layer), the tunica media (with smooth muscle) is the key.

Answer:

C