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Arteriole and venule

An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x

Arteriole <p>An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x</p>

Arteriole

An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x

Venule <p>An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x</p>

Venule

An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x

Tunica intima > <p>The thin tunica intima of the arteriole is clearly visible along with its highly reduced internal elastic lamina, which is particularly evident in the lower half of the vessel. In the venule, the basophilic cytoplasm of the endothelial cells is indicated.</p>

Tunica intima >

The thin tunica intima of the arteriole is clearly visible along with its highly reduced internal elastic lamina, which is particularly evident in the lower half of the vessel. In the venule, the basophilic cytoplasm of the endothelial cells is indicated.

Tunica media <p>An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x</p>

Tunica media

An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x

Tunica adventitia <p>An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x</p>

Tunica adventitia

An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x

Capillaries <p>An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x</p>

Capillaries

An arteriole consists of a tunica intima, a thin tunica media of one to two layers of smooth muscle cells and a tunica adventitia. The wall of the adjacent venule is thinner and less regular, consisting only of an endothelium, forming the tunica intima. A tunica media is absent and the thin tunica adventitia is indistinguishable from the surrounding connective tissue. 1000x

Main Slide Arteriole Venule Tunica intima >Tunica media Tunica adventitia Capillaries