What is anastomosis quizlet?

Anastomosis. connection or joining of vessels that is artery to artery or vein to vein the general purpose of these connections is to provide alternate pathways for the flow of blood if one vessel becomes obstructed.

What is anastomosis in biology?

The word “anastomosis” refers to a connection between two tubes or passages that would normally branch away from each other. In medical terminology, anastomosis is when surgeons connect two tube-like structures inside the body.

What is the purpose of anastomoses?

Anastomoses occur normally in the body in the circulatory system, serving as backup routes for blood flow if one link is blocked or otherwise compromised. Anastomoses between arteries and between veins result in a multitude of arteries and veins, respectively, serving the same volume of tissue.

Which vessels have valves prevent backflow?

Veins are blood vessels that carry blood toward the heart. This blood is no longer under much pressure, so many veins have valves that prevent backflow of blood.

Which term refers to the mechanism that describes the ability of a tissue to adjust its own blood supply through Vasomotion or angiogenesis?

autoregulation. the ability of a tissue to adjust its own blood supply through vasomotion or angiogenesis.

What is the function of the tunica externa?

Function. The tunica externa provides basic structural support to blood vessels. It prevents vessels from expanding too much from internal blood pressure, particularly arteries. It is also relevant in controlling vascular flow in the lungs.

Which of the following is an example of arteriovenous anastomosis?

Examples of surgical anastomoses are: Arteriovenous fistula (an opening created between an artery and vein) for dialysis. Colostomy (an opening created between the bowel and the skin of the abdominal wall) Intestinal, in which two ends of intestine are sewn together.

What is anastomoses and end arteries?

Arteries which do not anastomose with their neighbors are called end arteries. End arteries can exist when no anastomosis exists or when an anastomosis exists but is incapable of providing a sufficient supply of blood, thus the two types of end arteries are: Anatomic (true) end artery: No anastomoses.