The heart forms from an embryonic tissue called mesoderm around 18 to 19 days after fertilization. Mesoderm is one of the three primary germ layers that differentiates early in development that collectively gives rise to all subsequent tissues and organs.
The human heart is a four-chambered muscular organ, shaped and sized roughly like a man's closed fist with two-thirds of the mass to the left of midline. The heart is enclosed in a pericardial sac that is lined with the parietal layers of a serous membrane.
Anatomy of the heartLeft atrium and auricle.
Right atrium and auricle.
Interventricular septum and septal papillary muscles.
Right ventricle and papillary muscles.
Left ventricle and papillary muscles.
Dr Om is a Dynamic, Versatile and Progressive CardioThoracic & Vascular Surgeon who has studied, trained and worked in the Best Cardiac Surgery Units in India and Abroad. He is a coronary bypass and Valvular heart surgery expert and a veteran of more than 5000 plus heart surgeries.
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