Tunica media
Transverse section through a small artery and vein of the mucous membrane of the epiglottis of a child. (Tunica media is at 'm')
Details
Part ofMiddle layer of wall of blood vessels
Identifiers
Latintunica media vasorum
MeSHD017540
TA98A12.0.00.019
TA23921
THH3.09.02.0.01007
FMA55590
Anatomical terminology

The tunica media (Neo-Latin "middle coat"), or media for short, is the middle tunica (layer) of an artery or vein.[1] It lies between the tunica intima on the inside and the tunica externa on the outside.

Artery

Tunica media is made up of smooth muscle cells, elastic tissue and collagen. It lies between the tunica intima on the inside and the tunica externa on the outside.

The middle coat (tunica media) is distinguished from the inner (tunica intima) by its color and by the transverse arrangement of its fibers.

Vein

The middle coat is composed of a thick layer of connective tissue with elastic fibers, intermixed, in some veins, with a transverse layer of muscular tissue.[6]

The white fibrous element is in considerable excess, and the elastic fibers are in much smaller proportion in the veins than in the arteries.

Additional images

References

Public domain This article incorporates text in the public domain from page 498 of the 20th edition of Gray's Anatomy (1918)

  1. ^ Histology image:05102loa from Vaughan, Deborah (2002). A Learning System in Histology: CD-ROM and Guide. Oxford University Press. ISBN 978-0195151732.
  2. ^ Histology image:21103loa from Vaughan, Deborah (2002). A Learning System in Histology: CD-ROM and Guide. Oxford University Press. ISBN 978-0195151732.
  3. ^ a b Steve, Paxton; Michelle, Peckham; Adele, Knibbs (2003). "The Leeds Histology Guide". ((cite journal)): Cite journal requires |journal= (help)
  4. ^ Histology image: 66_02 at the University of Oklahoma Health Sciences Center - "Aorta"
  5. ^  This article incorporates text available under the CC BY 4.0 license. Betts, J Gordon; Desaix, Peter; Johnson, Eddie; Johnson, Jody E; Korol, Oksana; Kruse, Dean; Poe, Brandon; Wise, James; Womble, Mark D; Young, Kelly A (June 8, 2023). Anatomy & Physiology. Houston: OpenStax CNX. 20.1 Structure and function of blood vessels. ISBN 978-1-947172-04-3.
  6. ^ Histology image:05603loa from Vaughan, Deborah (2002). A Learning System in Histology: CD-ROM and Guide. Oxford University Press. ISBN 978-0195151732.