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The outer layer is called the tunica externa (or tunica adventitia) and is composed mostly of connective tissue

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12y ago
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14y ago

tunica externa

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Q: The outermost layer of an artery or vein is called the?
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Why the artery has a thick layer muscle then vein?

Because there is more pressure on the artery wall (from the heart) than that of the vein.


What are the differences of the wall of the artery and a vein?

The muscularis layer of arteries has a thicker layer of smooth muscle.


What vein or artery is called OM?

obtuse marginal artery


Is the aorta an artery or a vein?

it is a VEIN <3


What is the opposite of vein?

Artery.


What does the artery vein vein do?

there is no such animal as an artery vein.... you have artery and you have veins... no vessel is both, unless used in a CABG.


What makes a vein different from an artery in terms of the structure?

The artery has more muscle, media layer. This is used for contraction. The veins have little muscle layer, but have valves to prevent back flow.


Is the jugular a vein or artery?

It's a vein. The artery going to your head is the carotid artery.


Which has less nitrogenous waste the renal vein or the renal artery?

The blood in the Renal Vein:* Is low in oxygen. * Returns to the heart. The blood in the Renal Artery:* Has high amounts of oxygen. * Is pumped from the heart.


What veins and arteries travel through the renal sinus?

segmental artery, renal artery, renal vein, arcule vein, interlobular vein, interlobular artery


Is Artery more thicker than vein?

the wall of an artery is usuallythicker that the wall of a vein.


What is wider artery a vein or capillary?

artery