adventitial
/ˌæd.vɛnˈtɪʃ.i.əl/
adjective
- Relating to the adventitia, the outermost layer of a blood vessel or organ.
- Adventitial cells help repair damage to the outer vessel wall.
- Adventitial fibrosis can stiffen arteries and affect blood flow.
- The adventitial layer contains nerves and small blood vessels.