Tim Taylor is a senior writer at Innerbody Research focusing on human anatomy and physiology. Tim earned both his Bachelor of Science degree in Biology and his Master's degree in Teaching from the University of Pittsburgh.

Last updated: Jan 14th, 2025

Click to View Larger Image

The tunica adventitia is the outer layer of the vein. It is also called the tunica externa, and is made up almost entirely of collagen; this anchors the vein to other bodily tissues and organs so it remains fixed in a stable position.

No spam! Your privacy is important to us.

Fitness & Diet Hair & Skin Mental Health Wellness Research Human Body

About Us Editorial Policy Ad Policy Privacy Policy Terms of Use Do Not Sell My Info

Innerbody Research does not provide medical advice, diagnosis, or treatment. You must consult your own medical professional.