Human Heart and its Functioning;-
Transports Blood away from the Heart.
Transports Blood towards the Heart.
No Semilunar Valves (Except where they Leave Heart).
Semilunar valves at intervals along the length to prevent backflow of
Pressure of Blood is High and has a Pulse.
Pressure of Blood is Low and no pulse Detectable.
Blood Flow Rapid
Blood Flow Slow
Low Blood Volume
Much higher Blood Volume than Capillaries or Arteries.
Blood Oxygenated except in Pulmonary Artery.
Blood Deoxygenated except in Pulmonary Vein.
Diseases of Heart
Pain in Heart Muscles, appearing as Chest Pain. It is caused due to Obstruction in Coronary Artery.
Increased rate of Heart Beat.
Decreased rate of Heart Beat.
When symptoms such as breathlessness, palpitations, pain in the chest, unconsciousness appear suddenly. Nitroglycerine is used for the treatment.
When heart beat is not passed to the ventricles properly. This is the defect of conducting system of the heart.
It is irregular heart beat.
Due to formation of clot in coronary artery
Thickening of walls of blood vessels due to deposition of fat including cholesterol. Frequently causes Myocardial Ischaemia (inadequate flow of blood to a part of heart) leading to myocardial infarction (death of tissue
It is the death of a part of heart muscle following cessation of blood supply to it. It is acute heart attack.