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- Left Atrium: The left atrium is located posteriorly, forming much of the base of the heart. It receives oxygenated blood from the lungs through the four pulmonary veins (two from each lung). Like the right atrium, the left atrium also has a muscular auricle. Blood flows from the left atrium into the left ventricle through the mitral valve.
anatomy.co.uk/heart/
Nov 3, 2023 · The heart is shaped as a quadrangular pyramid, and orientated as if the pyramid has fallen onto one of its sides so that its base faces the posterior thoracic wall, and its apex is pointed toward the anterior thoracic wall.
- Surface Projections of The Heart
It is called the first heart sound (S1). On the other hand,...
- Innervation of The Heart
The heart is innervated by sympathetic and parasympathetic...
- Diagrams, Quizzes and Worksheets of The Heart
Using our unlabeled heart diagrams, you can challenge...
- Coronary Arteries
Coronary arteries. The coronary arteries arise from the root...
- Ductus Arteriosus
Ligamentum arteriosum (also known as Ligament of Botallo or...
- Atria
It continues toward the posterior surface of the heart where...
- Ventricles
The outer surface of the heart is marked by depressions...
- Heart Valves
Atrioventricular valves The mature heart is a muscular tube...
- Surface Projections of The Heart
Apr 20, 2023 · Posterior (base of the pyramid) – Left atrium. Inferior (or diaphragmatic) – Left and right ventricles. Right pulmonary – Right atrium. Left pulmonary – Left ventricle. Borders. Separating the surfaces of the heart are its borders. There are four main borders of the heart: Right border – Right atrium.
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Nov 10, 2024 · Last updated on November 10, 2024. The heart is a muscular organ that pumps blood throughout the body via the circulatory system. It is approximately the size of a fist and consists of four chambers: two atria and two ventricles. The heart is composed of specialized muscle tissue, known as myocardium, and is encased within a double-layered ...
Aug 26, 2013 · The left side of the heart pumps blood through the systemic circuit to all body tissues and back to the right side of the heart . The posterior surface has a broad, flat base about 9 cm (3.5 inches) wide.
The heart has the shape of a pyramid, with its apex pointing towards the left nipple while its base forms the posterior surface of the heart. Other surfaces are the anterior, inferior (or diaphragmatic), and two pulmonary surfaces facing the lungs.
Oct 20, 2024 · The right ventricle makes up the right side and much of the anterior portion of the heart, while the left ventricle makes up the left side and much of the posterior portion of the heart (Figure \(\PageIndex{6}\)).
Aug 17, 2023 · It continues toward the posterior surface of the heart where it meets the atrioventricular and posterior interventricular grooves at the cardiac crux. The left and right atria are separated by a fibromuscular wall known as the atrial (interatrial) septum , while the ventricles are separated by a similar structure, known as the ventricular ...
