Discover the intricate details of the internal structure of the heart and how it functions. Learn about the different chambers, valves, and blood vessels that make up this vital organ.
The heart is mesodermal in origin. It is a thick walled, muscular and pulsating organ, situated in the mediastinum, and with its apex slightly turned to the left, it is of the size of a clinched fist. The heart is covered by a double walled pericardium which consists of the outer fibrous pericardium and inner serous pericardium. The serous pericardium is double layered, formed of an outer parietal layer and an inner visceral layer. The parietal layer is fused with the fibrous pericardium…
Internal structure of human heart shows four chambers viz. two atria and two ventricles and couple of blood vessels opening into them. The wall of two ventricles are strong and sturdy when compared to atria. Before we start, we shall recall the basic proportions of heart and its chambers. The right Auricle is larger than left. The walls of Left ventricle are thicker than the walls of Right ventricle.We shall try to incorporate the above details in the diagram for maximum accuracy. In this…
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Heart valves are the specialized flap or cusp-like structures inside the heart composed primarily of dense connective tissues that maintain the one-way flow of the blood inside the heart i.e., ... Read more The post Heart Valves: Types, Structure, Functions, Diseases appeared first on Microbe Notes.
19.8 Internal Anatomy of the Heart. (a) A coronal section reveals the internal structure of the heart, including the heart wall, chambers, and valves. (b) The heart wall contains an outer epicardium; a thick, middle myocardium; and an inner endocardium.