Digital Histology
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Small vein

Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x

Small vein <p>Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x</p>

Small vein

Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x
Small artery <p>Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x</p>

Small artery

Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x
Tunica media <p>Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x</p>

Tunica media

Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x
Tunica adventitia <p>Venules lead into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x</p>

Tunica adventitia

Venules lead into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x
Valve flap <p>Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x</p>

Valve flap

Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x
Peripheral nerve <p>Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x</p>

Peripheral nerve

Venules continue into small veins, which possess a thin tunica media, composed of scattered smooth muscle, and a prominent tunica adventitia.  Like venules, veins also possess valves.  The wall of the small vein is much thinner and less regular than that of the small artery it accompanies.  100x
Main SlideSmall veinSmall arteryTunica mediaTunica adventitiaValve flap Peripheral nerve