GENERAL HISTOLOGY

Detailed explanation-1: -Brain aneurysms are caused by thinning artery walls. Aneurysms often form at forks or branches in arteries because those areas of the vessels are weaker. Although aneurysms can appear anywhere in the brain, they’re most common in arteries at the base of the brain.

Detailed explanation-2: -Aneurysms are the result of weakening and thinning of the artery wall. When a portion of the arterial wall stretches and swells to more than 50 percent of the original diameter, this is called an aneurysm.

Detailed explanation-3: -An aneurysm is a ballooning in a weak spot in an artery wall. Many different things can cause the popliteal artery wall to become weak, including: Clogged arteries (atherosclerosis)

Detailed explanation-4: -An aortic aneurysm is a bulge that occurs in the wall of the major blood vessel (aorta) that carries blood from the heart to the body. Aortic aneurysms can occur anywhere in the aorta and may be tube-shaped (fusiform) or round (saccular). Aortic aneurysms include: Abdominal aortic aneurysm.