Sound #2: The Squeal of a Banshee, But Under the Hood. 1  What you hear: A loud squealing noise coming from under the hood. 2  Whatâs happening: This is a classic sign of a loose or worn serpentine belt. 3  Cause for concern? Yes, because the serpentine belt powers all of your carâs major systems.
In Depth: Vessels. The kidneys are important to the bodyâs production of urine, but they also play a role in regulating important components of the blood. Blood comes to the kidneys from the abdominal aorta and inferior vena cava, the large arteries and veins that are part of the ascending aorta. Oxygenated blood is brought to the kidneys from a small branch called the renal artery.
Renal Artery Stenosis. Renal artery stenosis (RAS) is the narrowing of one or both arteries that carry blood to the two kidneys. âRenalâ means âkidneyâ and âstenosisâ means ânarrowing.â RAS can cause high blood pressure and reduce kidney function.RAS is often overlooked as a cause of high blood pressure.he arteries that carry blood to the kidneysâcalled the renal arteriesâbranch off directly from the abdominal aorta, the main vessel from the heart that supplies blood to most of the bodyâs organs. Healthy kidneys filter out wastes and extra fluid from the blood that passes through them.