Which is a localized weakness and dilation in an arterial wall?

An aneurysm is a localized and permanent dilation that occurs in the walls of the arteries. This abnormal dilation is caused by the weakness of the wall of an area of the blood vessel. Aneurysms arise when the wall of an artery is diseased and weakened.

What is a localized dilation of an artery?

The basic definition of an aneurysm is a permanent localized dilation of an artery. Although the details of the exact definition will vary, most experts agree that, an aneurysm is a bulge in a blood vessel, large enough so that it is up to 1.5 times its normal diameter.

What is a localized dilation of an artery as a result of a localized weakness of the vessel wall?

Aneurysm. An aneurysm is a localized enlargement of arteries, characterized by a balloon-like bulge. It results from the abnormal weakening of blood vessel wall.

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Which of the following is a localized dilation of the wall of an artery?

An aneurysm is the enlargement of an artery caused by weakness in the arterial wall. Often there are no symptoms, but a ruptured aneurysm can lead to fatal complications. An aneurysm refers to a weakening of an artery wall that creates a bulge, or distention, of the artery.

What is the term for a weakness in the wall of an artery?

An aneurysm is a bulging, weak area of an artery wall and can occur anywhere in the body. The most common symptom is pain in the area of the aneurysm. An aneurysm is repaired once it reaches a certain size. This is to prevent rupture of the blood vessel.

What is a localized irregular dilation of a vessel wall?

An aneurysm is a localized and permanent dilation that occurs in the walls of the arteries. This abnormal dilation is caused by the weakness of the wall of an area of the blood vessel. Aneurysms arise when the wall of an artery is diseased and weakened.

What is the condition caused by a localized weakness in the muscle layer of the arterial wall?

A weakened artery wall may stretch as blood is pumped through it from the heart. An aneurysm may occur because of a localized weakness of the artery wall (saccular).

What is a weakened and dilated artery called?

An aneurysm is a bulging, weakened area in the wall of a blood vessel resulting in an abnormal widening or ballooning greater than 50% of the vessel’s normal diameter (width). An aneurysm may occur in any blood vessel, but is most often seen in an artery rather than a vein.

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What is dilation of vessels?

Definition: The opening up or enlargement of the blood vessels that is controlled by the action of certain hormones on the muscular lining of the vessels.

What is the local widening of an artery called?

aneurysm, widening of an artery that develops from a weakness or destruction of the medial layer of the blood vessel.

What is a ballooning or dilation of a blood vessel wall?

An aneurysm—a balloon-like bulge in an artery—can develop and grow for years without causing any symptoms. But an aneurysm is a silent threat to your health. If an aneurysm grows too large, it can burst open, or rupture, and lead to dangerous bleeding inside the body.

What are the causes of vasoconstriction?

What are the most common causes of vasoconstriction?

  • Prescription medicines or non-prescription medicines like decongestants. These have ingredients that cause blood vessels to narrow to provide relief.
  • Some medical conditions. …
  • Some psychological problems, such as stress. …
  • Smoking. …
  • Being outside in the cold.

Which term means narrowing of blood vessels?

Stenosis – A narrowing of a blood vessel, such as artery or vein.