
Venule
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Small venules
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Large venule
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Venule endothelial cell nuclei
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Tunica media
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Tunica adventitia
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Arterioles
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Capillary
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x

Peripheral nerve
Various examples of venules and arterioles are shown in these images. In the left panel, note that small venules are composed of a tunica intima and a thin tunica adventitia of connective tissue. A tunica media is absent. Arterioles have a tunica intima, a single layer of smooth muscle forming the tunica media, and a thin tunica adventitia. In larger venules, as shown in the right panel, the tunica media contains one to two layers of smooth muscle cells. 1000x