![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Large vein (vena cava)
These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x
![Tunica intima <p>These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x </p>](https://digitalhistology.org/wp-content/uploads/2023/10/Or.CV_.V.V-16A-1-ping.png)
Tunica intima
These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x
![Tunica media <p>These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x </p>](https://digitalhistology.org/wp-content/uploads/2023/10/Or.CV_.V.V-16A-3-ping.png)
Tunica media
These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x
![Tunica adventitia <p>These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x </p>](https://digitalhistology.org/wp-content/uploads/2023/10/Or.CV_.V.V-16A-4-ping.png)
Tunica adventitia
These images compare the appearance of the wall of a large vein in cross section (left) and with that seen in longitudinal section (right). Note the reversed orientation of the smooth muscle fibers. H & E stain (left), elastin stain (right), 250x
![Image source > <p>This image was taken of a slide from the Drexel University slide collection.</p>](https://digitalhistology.org/wp-content/uploads/2023/10/Or.CV_.V.V-16A-5-ping.png)
Image source >
This image was taken of a slide from the Drexel University slide collection.