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2. Anatomy of the human heart - Wikipedia

   en.wikipedia.org/wiki/Anatomy_of_the_human_heart

   The heart is a muscular organ situated in the mediastinum.It consists of four chambers, four valves, two main arteries (the coronary arteries), and the conduction system. The left and right sides of the heart have different functions: the right side receives de-oxygenated blood through the superior and inferior venae cavae and pumps blood to the lungs through the pulmonary artery, and the left ...

3. Heart - Wikipedia

   en.wikipedia.org/wiki/Heart

   The heart is a muscular organ found in humans and other animals. This organ pumps blood through the blood vessels. [1] Heart and blood vessels together make the circulatory system. [2] The pumped blood carries oxygen and nutrients to the tissue, while carrying metabolic waste such as carbon dioxide to the lungs. [3]

4. Atrioventricular node - Wikipedia

   en.wikipedia.org/wiki/Atrioventricular_node

   Isolated heart conduction system showing atrioventricular node. The AV node receives two inputs from the right atrium: posteriorly, via the crista terminalis, and anteriorly, via the interatrial septum. [8] Contraction of heart muscle cells requires depolarization and repolarization of their cell membranes. Movement of ions across cell ...

5. Cardiac skeleton - Wikipedia

   en.wikipedia.org/wiki/Cardiac_skeleton

   The heart's cardiac skeleton comprises four dense connective tissue rings that encircle the mitral and tricuspid atrioventricular (AV) canals and extend to the origins of the pulmonary trunk and aorta. This provides crucial support and structure to the heart while also serving to electrically isolate the atria from the ventricles. [1]

6. Cardiology - Wikipedia

   en.wikipedia.org/wiki/Cardiology

   As the center focus of cardiology, the heart has numerous anatomical features (e.g., atria, ventricles, heart valves) and numerous physiological features (e.g., systole, heart sounds, afterload) that have been encyclopedically documented for many centuries. The heart is located in the middle of the abdomen with its tip slightly towards the left ...

7. Circumflex branch of left coronary artery - Wikipedia

   en.wikipedia.org/wiki/Circumflex_branch_of_left...

   Anatomy figure: 20:04-01 at Human Anatomy Online, SUNY Downstate Medical Center – "Posterior view of the heart." [dead link ‍] Anatomy photo:20:09-0104 at the SUNY Downstate Medical Center [dead link ‍] – "Heart: The Left Coronary Artery and its Branches" Image at merck.com Archived 14 April 2006 at the Wayback Machine

8. Atrium (heart) - Wikipedia

   en.wikipedia.org/wiki/Atrium_(heart)

   Right heart anatomy, right ventricle seen on right of illustration. Humans have a four-chambered heart consisting of the right and left atrium, and the right and left ventricle. The atria are the two upper chambers which pump blood to the two lower ventricles.

9. Coronary sulcus - Wikipedia

   en.wikipedia.org/wiki/Coronary_sulcus

   The right coronary sulcus begins anteriorly and superiorly on the sternocostal surface of the heart. Its position is marked by the location of the right coronary artery, and small cardiac vein. The right coronary sulcus separates the right atrium and its atrial appendage from the right ventricle inferiorly. The right coronary sulcus then passes ...