Question

Describe the struture of human heart ?​

Answer 1

Answer:

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.

Answer 2

A four-chambered muscular organ, the human heart has four chambers.

A pericardial sac surrounds the heart and is lined by serous membrane parietal layers. The epicardium is created by the visceral layer of the serous membrane.

The heart is split into four chambers within its internal cavity:

Atrium on the left

ventricular right

Atrium (left)

ventricle (left)

• The atria are hollow chambers with thin walls that accept blood from veins.
• The two ventricles are large chambers with strong walls that drive blood out of the heart.
• The quantity of myocardium present, which represents the amount of force each chamber is required to create, causes differences in the thickness of the heart chamber walls.
• Systemic veins deliver deoxygenated blood to the right atrium, whereas pulmonary veins deliver oxygenated blood to the left atrium.