![This is blank.](https://digitalhistology.org/wp-content/themes/histology-unified/imgs/trans.png)
Small artery
Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x
![Endothelium <p>Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.CV_.V.A-17-1-ping.png)
Endothelium
Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x
![Internal elastic lamina <p>Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.CV_.V.A-17-2-ping.png)
Internal elastic lamina
Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x
![Tunica media <p>Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.CV_.V.A-17-3-ping.png)
Tunica media
Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x
![Tunica adventitia <p>Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x</p>](https://digitalhistology.org/wp-content/uploads/2017/07/Or.CV_.V.A-17-4-ping.png)
Tunica adventitia
Small arteries are distinguished by having a prominent internal elastic lamina, three to eight layers of smooth muscle in the tunica media and a tunica adventitia. The external elastic lamina is highly reduced or may be absent entirely in small arteries. 400x