explain the structure of humen heart with diagram
Answers
Answer:
Humn hert med by cardic muscle the heart has four chamber upper chamber called atria and lower two chamber called ventricles.
The two atria receive blood from the two main veins. And two ventricles transport blood to the entire body and the lungs. Sorry for fig. Becs its not available. Thanks I hope it is helpful for u.
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Answer:
Explanation:
It is a hollow conical organ with its narrow apex directed downwards to the left. It measures about the size of the person's closed fist, and weighs about 300g in an adult. It rests on the diaphragm, near the middle of the thoracic cavity in the mediastinum. The mediastinum is a broad median partition of a mass of tissues, between the lungs. It extends from the sternum to the vertebral column. About two-thirds of the mass of the heart lies to the left of the body's midline. The heart is about 12cm long, 9cm wide at its broadest point, and 6cm thick . The pointed inferior end of the heart, the apex, is formed by the tip of the left ventricles and tilts obliquely towards the left hip. The wide superior and posterior margin of the heart opposite the apex is known as base, because it is broad and rather flat, like the base of pyramid. The base of the heart is formed by mostly the left atrium.