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Tuesday, 15 January 2019

What is Heart? Some facts about Heart

Heart- The organ inside your chest that sends blood round your body.
The human heart is an organ that pumps blood throughout the body via the circulatory system.

Study of heart is called Cardiology hart is dark red colored highly muscular central pumping organ.
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Location:- Heart lies in the thoracic cavity slightly towards left.

Heart remain enclosed by protective covering called Pericardium.
Pericardium is bilayered outer layer is called parietal Pericardium and inner layer is called visceral Pericardium.
Between these two layer pericardial space is present which is filled with pericardial fluid. Pericardial fluid acts as lubricant and provides function less movement . It acts as cushion and also protects from external shock and injury.

Some interesting facts about Heart- 💝💝

  1. The average heart is the size of a fist in an adult.
  1. Your heart will beat about 115,000 times each day.
  2. Your heart pumps about 2,000 gallons of blood every day.

  1. An electrical system controls the rhythm of your heart. It’s called the cardiac conduction system.
  2. The heart can continue beating even when it’s disconnected from the body.

  1. The fairy fly, which is a kind of wasp, has the smallest heart of any living creature.

  1. If you were to stretch out your blood vessel system, it would extend over 60,000 miles.

  1. Laughing is good for your heart. It reduces stress and gives a boost to your immune system.

  1. A woman’s heart beats slightly faster than a man’s.

  1. Size of heart is 12×8 cm.

  1. Heart remain enclosed by protective covering called Pericardium.

  1. Weight of Heart is 300gm.

  1. Mammalian Heart is four chambered

  1. Sino-Artrial node (S.A node) is called Pacemaker of the heart.

  1. Mammalian Heart is myogenic.
  • SA Node- It is present in right auricle and generate the electrical impulses which causes contraction of auricles.

  1. The volume  of blood pumped out by Hath par cardiac cycle is called cardiac output cardiac output is 70ml/cardiac cycle.

  1. cardiac output = 70 ml × 72 = 5040 ml /minutes

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