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Nov 3, 2023 · Overview of the anatomy and functions of the heart. Heart (right lateral view) The heart is a muscular organ that pumps blood around the body by circulating it through the circulatory/vascular system. It is found in the middle mediastinum, wrapped in a two-layered serous sac called the pericardium.
- Surface Projections of The Heart
Borders of the heart. The heart is placed within the middle...
- Innervation of The Heart
The innervation of the heart refers to the network of nerves...
- Diagrams, Quizzes and Worksheets of The Heart
Labeled heart diagram showing the heart from anterior...
- Coronary Arteries
Coronary arteries and cardiac veins. The heart is a...
- Ductus Arteriosus
Ligamentum arteriosum (also known as Ligament of Botallo or...
- Atria
Basic anatomy of the heart. The heart is at the center of...
- Ventricles
The definition of heart ventricles can be summed up as the...
- Heart Valves
Understanding heart valves anatomy is important in grasping...
- Surface Projections of The Heart
- Pericardium
- Structure of The Heart Wall
- Chambers of The Heart
- Valves of The Heart
- Conduction System of The Heart
The heart sits within a fluid-filled cavity called the pericardial cavity. The walls and lining of the pericardial cavity are a special membrane known as the pericardium. Pericardium is a type of serous membrane that produces serous fluid to lubricate the heart and prevent friction between the ever beating heart and its surrounding organs. Besides ...
The heart wall is made of 3 layers: epicardium, myocardium and endocardium. 1. Epicardium. The epicardium is the outermost layer of the heart wall and is just another name for the visceral layer of the pericardium. Thus, the epicardium is a thin layer of serous membrane that helps to lubricate and protect the outside of the heart. Below the epicard...
The heart contains 4 chambers: the right atrium, left atrium, right ventricle, and left ventricle. The atria are smaller than the ventricles and have thinner, less muscular walls than the ventricles. The atria act as receiving chambers for blood, so they are connected to the veins that carry blood to the heart. The ventricles are the larger, strong...
The heart functions by pumping blood both to the lungs and to the systems of the body. To prevent blood from flowing backwards or "regurgitating" back into the heart, a system of one-way valves are present in the heart. The heart valves can be broken down into two types: atrioventricular and semilunar valves. 1. Atrioventricular valves. The atriove...
The heart is able to both set its own rhythm and to conduct the signals necessary to maintain and coordinate this rhythm throughout its structures. About 1% of the cardiac muscle cells in the heart are responsible for forming the conduction system that sets the pace for the rest of the cardiac muscle cells. The conduction system starts with the pac...
Jun 11, 2024 · Understanding its basic anatomy is crucial to understanding how it functions. This article provides a comprehensive look at the heart's structure with a detailed, labeled diagram and realistic photos, guiding you through each part and its role in the circulatory system.
Sep 25, 2024 · In humans it is situated between the two lungs and slightly to the left of centre, behind the breastbone; it rests on the diaphragm, the muscular partition between the chest and the abdominal cavity. The heart consists of several layers of a tough muscular wall, the myocardium.
- The Editors of Encyclopaedia Britannica
- In humans, the heart is situated between the two lungs and slightly to the left of center, behind the breastbone. It rests on the diaphragm, the mu...
- The heart consists of several layers of a tough muscular wall, the myocardium. A thin layer of tissue, the pericardium, covers the outside, and ano...
- The pumping of the heart, or the heartbeat, is caused by alternating contractions and relaxations of the myocardium. These contractions are stimula...
- The rhythmic noises accompanying the heartbeat are called heart sounds. The two distinct sounds are heard, a low, slightly prolonged “lub” (first s...
- Location of the Heart. The human heart is located within the thoracic cavity, medially between the lungs in the space known as the mediastinum. Figure 19.2 shows the position of the heart within the thoracic cavity.
- Shape and Size of the Heart. The shape of the heart is similar to a pinecone, rather broad at the superior surface and tapering to the apex (see Figure 19.2).
- Chambers and Circulation through the Heart. The human heart consists of four chambers: The left side and the right side each have one atrium and one ventricle.
- Membranes, Surface Features, and Layers. Our exploration of more in-depth heart structures begins by examining the membrane that surrounds the heart, the prominent surface features of the heart, and the layers that form the wall of the heart.
The heart is a hollow, muscular organ that pumps oxygenated blood throughout the body and deoxygenated blood to the lungs. This key circulatory system structure is comprised of four chambers.
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Jan 11, 2021 · Diagram showing the right (RCA) and left (LCA) coronary arteries and their main ventricular branches. The left anterior descending (LAD) and posterior descending (PDA) coronary arteries mark the anterior and posterior margins of the ventricular septum.
![Heart anatomies with significant areas [12]. | Download Scientific Diagram](https://ca.images.search.yahoo.com/search/images?p=define+demoniacal+area+of+the+heart+anatomy+diagram&ei=UTF-8&th=104.1&tw=164.5&imgurl=https%3A%2F%2Fwww.researchgate.net%2Fprofile%2FMd_Rahman202%2Fpublication%2F331047335%2Ffigure%2Ffig1%2FAS%3A726626132303885%401550252578726%2FHeart-anatomies-with-significant-areas-12.png&rurl=https%3A%2F%2Fwww.researchgate.net%2Ffigure%2FHeart-anatomies-with-significant-areas-12_fig1_331047335&size=103KB&name=Heart+anatomies+with+significant+areas+%5B12%5D.+%7C+Download+Scientific+Diagram&oid=5&h=466&w=734&turl=https%3A%2F%2Ftse1.mm.bing.net%2Fth%3Fid%3DOIP.44Gwi0qJllK0DFeJTVZ6vgHaEs%26pid%3DApi%26rs%3D1%26c%3D1%26qlt%3D95%26w%3D164%26h%3D104&tt=Heart+anatomies+with+significant+areas+%5B12%5D.+%7C+Download+Scientific+Diagram&sigr=G.taCjVTBcAK&sigit=UUPO4LPIWGt1&sigi=06ylIP_OWpag&sign=CZqkYLML3buY&sigt=CZqkYLML3buY "Heart anatomies with significant areas [12]. | Download Scientific Diagram")
