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Oct 20, 2024 · The shape of the heart is similar to a pinecone, rather broad at the superior surface (the base, on the posterior side) and tapering to the apex (Figure 17.2.1 17.2. 1). The apex of the heart is inferior and to the left while the base of the heart is superior and posterior.
- 16.1: Location of the Heart
The inferior tip of the heart, the apex, lies just to the...
- 16.1: Location of the Heart
Jan 11, 2021 · The aortic valve lies posterior and to the right, above the nearly vertically orientated tricuspid valve (Figure 3B). The mitral valve is further posterior, overlapped by the more anterior but inferior tricuspid valve. The aortic valve therefore occupies a central position in the heart, wedged between the two atrioventricular valves.
Apr 20, 2023 · In the anatomical position, the heart has five surfaces – each formed by the different chambers of the heart: Anterior (or sternocostal) – Right ventricle. Posterior (base of the pyramid) – Left atrium.
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- Heart anatomy. The heart has five surfaces: base (posterior), diaphragmatic (inferior), sternocostal (anterior), and left and right pulmonary surfaces. It also has several margins: right, left, superior, and inferior
- Heart valves. Heart valves separate atria from ventricles, and ventricles from great vessels. The valves incorporate two or three leaflets (cusps) around the atrioventricular orifices and the roots of great vessels.
- Blood flow through the heart. The blood flow through the heart is quite logical. It happens with the heart cycle, which consists of the periodical contraction and relaxation of the atrial and ventricular myocardium (heart muscle tissue).
- Coronary circulation. The heart must also be supplied with oxygenated blood. This is done by the two coronary arteries: left and right. Heart muscles work constantly (thank goodness!)
Sep 14, 2021 · The inferior tip of the heart, the apex, lies just to the left of the sternum between the junction of the fourth and fifth ribs near their articulation with the costal cartilages. The right side of the heart is deflected anteriorly, and the left side is deflected posteriorly.
On the posterior surface of the heart, the right coronary artery gives rise to the posterior interventricular artery, also known as the posterior descending artery. It runs along the posterior portion of the interventricular sulcus toward the apex of the heart, giving rise to branches that supply the interventricular septum and portions of both ...
The heart is located within the thoracic cavity. Between the two lungs and their cavities (pleural cavities) is a central cavity called the mediastinum. The heart is located inside of the mediastinum in an inner cavity called the pericardial cavity.
