Circulatory System Diseases

• "hardening of the fatty stuff"
• hardening of the arteries due to fatty areas becoming calcified.

• blockage of blood flow to the muscles of the heart
• blockage occurs in one of the coronary arteries

• when the atrioventricular valve (or mitral valve) is torn off by disease
• prolapse (falling forward) occurs in the heart
• regurgitation occurs

A valve may be abnormally narrow causing a partial obstruction constricting floor (stenosis)

• "pain in the chest" 
• crushing, viselike. often accompanied by shortness of breath, fatigue and nausea. 
• indication that not enough blood is getting to the heart muscle

• "no rhythm"
• "abnormal rhythm"

• when the heart muscle isn't getting enough blood or, more importantly, enough oxygen
• "not quite enough blood"