Multiple choice

Which coat of artery prevents it from collapsing?

  1. Tunica interna

  2. Tunica media

  3. Tunica externa

  4. Parietal layer

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

It prevents the artery from collapsing. It is the middle thick coat of circularly disposed, smooth or unstriped muscle fibres and elastic connective fibres. The thick coat prevents arteries from collapsing.