Arterial Smooth Muscle Fibre of Coronary Circulation has Twice More Pulsatory Power Than That of Systemic or Pulmonary Circulation.

Dr. Keshaw Kumar

Volume : V, Issue : VI, June - 2016

Arterial Smooth Muscle Fibre of Coronary Circulation has Twice More Pulsatory Power Than That of Systemic or Pulmonary Circulation.

Dr. Keshaw Kumar

Abstract :

 Pulsatory power of human ascending aorta, pulmonary trunk, femoral artery right coronary artery and left coronary artery was divided by the total number of smooth muscle fies present in tunica media of their 10mm long arterial segments to calculate the pulsatory power of single arterial smooth muscle fie. It was observed that pulsatory power of single arterial smooth muscle fie present in ascending aorta, pulmonary trunk and femoral artery was 3.33 Joule per heart beat while the pulsatory power of single arterial smooth muscle fie present in right coronary artery and left coronary artery was 6.66 Joule per heart beat. It was concluded that pulsatory power of single smooth muscle fie present in coronary arterial circulation was twice more than the pulsatory power of single smooth muscle fie present in systemic/pulmonary arterial circulation because blood enters the lumen of coronary arteries during diastole of heart when pressure as well as velocity of blood flow are less than that during systole of heart and to compensate it coronary arterial smooth muscle fie has to work twice more to propel the blood forwards.