BCAA consists of the amino acids leucine, isoleucine and valine. The reason these three amino acids are called BCAA is because they branch off from the other five essential amino acids, (there are a total of eight), to create their own chain. Amino acids are responsible for the formation of proteins in the body.
An aneurysm is an abnormal bulging out or ballooning of a portion of the artery, usually due to weakness of the arterial wall. The aneurysm may enlarge and rupture, often with disastrous consequences.
A thrombus is a clot that blocks blood flow. If part of the thrombus breaks away, it is called an embolism. Sometimes clots form inside vessels where there is no injury and they do not dissolve naturally. Abnormal clots can form in arteries or veins, important vessels that transport blood around the body. Arteries carry oxygenated blood from the heart to the rest of the body and veins carry deoxygenated blood away from the body's organs and back to the heart.