Cardiovascular System 3

• results when an embolus lodges in a cerebral blood vessel or a cerebral blood vessel bursts; a portion of the brain dies due to lack of oxygen.

  stroke
• occurs when a portion of heart muscle dies due to lack of oxygen.

  heart attack
• Partial blockage of a coronary artery causes

  angina pectoris
• ballooning of a blood vessel, usually in the abdominal aorta or arteries leading to the brain.

  aneurysm
• involves removing a segment of another of another blood vessel and replacing a clogged coronary artery.

  bypass operation
• uses a long tube threaded through an arm h an arm or leg vessel to the point where the coronary artery is blocked; inflating the tube forces the vessel open.

  angioplasty
• small metal are expanded inside the artery to keep it open.

  stents
• reduces the stickiness of platelets and reduces clot formation and lowers the risk of heart attack.

  aspirin