Question 40
1 pts
Each of the following statements accurately describes a feature of arteries EXCEPT which
one?
O Arteries have a smooth muscle layer in the wall which provides some stiffness.
O Elastic fibers in arterial walls allow stretching of the arteries.
O Valves along major arteries maintain directed blood flow.
O A tough supportive layer of connective tissue containing collagen is found on the outer surface of
arteries.
Previches

Respuesta :

Each of the statements describes a feature of arteries EXCEPT 'valves along major arteries maintain directed blood flow'.

An artery is a vessel that transports blood away from the heart and branches into smaller blood vessels. The valves of the heart ensure that the blood only can flow in one direction.

The four main valves of the heart are the mitral valve, tricuspid valve, aortic valve and pulmonic valve.

Arteries don't need valves because the blood pressure is very strong and therefore blood only can flow in one direction.

Some examples of major arteries include the celiac artery, superior mesenteric artery, and inferior mesenteric artery.

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