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Arteries vs veins

Arteries typically have more regularly arranged, thicker walls than veins; arteries have smaller diameters than do their accompanying veins.  The tunica media is the predominate layer in arteries; tunica adventitia is the predominate layer in veins.  400x.

Muscular artery <p>Arteries typically have more regularly arranged, thicker walls than veins; arteries have smaller diameters than do their accompanying veins.  The tunica media is the predominate layer in arteries; tunica adventitia is the predominate layer in veins.  400x</p>

Muscular artery

Arteries typically have more regularly arranged, thicker walls than veins; arteries have smaller diameters than do their accompanying veins.  The tunica media is the predominate layer in arteries; tunica adventitia is the predominate layer in veins.  400x

Medium vein <p>Arteries typically have more regularly arranged, thicker walls than veins; arteries have smaller diameters than do their accompanying veins.  The tunica media is the predominate layer in arteries; tunica adventitia is the predominate layer in veins.  400x</p>

Medium vein

Arteries typically have more regularly arranged, thicker walls than veins; arteries have smaller diameters than do their accompanying veins.  The tunica media is the predominate layer in arteries; tunica adventitia is the predominate layer in veins.  400x

Tunica intima > <p>As demonstrated in these medium vessels, the tunica intima of both arteries and veins is composed of a simple squamous epithelium, the endothelium.  The tunica intima of arteries typically has a thicker connective tissue layer beneath the endothelium than is present in the accompanying vein.</p>

Tunica intima >

As demonstrated in these medium vessels, the tunica intima of both arteries and veins is composed of a simple squamous epithelium, the endothelium.  The tunica intima of arteries typically has a thicker connective tissue layer beneath the endothelium than is present in the accompanying vein.

 - Internal elastic lamina > <p>An internal elastic lamina is characteristic of the muscular artery but are lacking in the medium vein.  The lamina appears folded like “ribbon candy” due to postmortem shrinkage of the vessel.</p>

- Internal elastic lamina >

An internal elastic lamina is characteristic of the muscular artery but are lacking in the medium vein.  The lamina appears folded like “ribbon candy” due to postmortem shrinkage of the vessel.

Tunica media > <p>As demonstrated in these medium-sized vessels, the tunica media of smooth muscle is the predominate layer in arteries.</p>

Tunica media >

As demonstrated in these medium-sized vessels, the tunica media of smooth muscle is the predominate layer in arteries.

Tunica adventitia > <p>The tunica adventitia is a much more dominant component in the wall of veins compared with arteries.</p>

Tunica adventitia >

The tunica adventitia is a much more dominant component in the wall of veins compared with arteries.

Lumen <p>The tunica adventitia is a much more dominant component in the wall of veins compared with arteries.</p>

Lumen

The tunica adventitia is a much more dominant component in the wall of veins compared with arteries.

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