Define struture of heart ???
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The human heart is a hollow muscular bag like organ made up of powerful muscles.
• The human heart is shaped like an upside down pear.
The heart is approximately the size of an closed fist of an individual.
• It is located in the chest region between the lungs.
• The tapered end of the heart is known as the apex is pointed forwards and towards the left.
• The heart is divided into left and right parts by thick vertical muscular wall known as Septum.
• The left and right parts of the heart of other divided into upper and lower Chambers.
The heart is divided into four chambers consisting of two atria and two ventricles; the atria receive blood, while the ventricles pump blood. The right atrium receives blood from the superior and inferior vena cavas and the coronary sinus; blood then moves to the right ventricle where it is pumped to the lungs.