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2. Interatrial septum - Wikipedia

   en.wikipedia.org/wiki/Interatrial_septum

   The interatrial septum is a septum that lies between the left atrium and right atrium of the human heart. The interatrial septum lies at angle of 65 degrees from right posterior to left anterior because right atrium is located at the right side of the body while left atrium is located at the left side of the body. [1]

3. Bachmann's bundle - Wikipedia

   en.wikipedia.org/wiki/Bachmann's_bundle

   Bachmann's bundle receives its blood supply from the sinoatrial nodal artery (right, left or both). [4]Besides Bachmann's bundle, the other three conduction tracts that constitute the atrial conduction system are known as the anterior, middle, and posterior tracts, which run from the sinoatrial node to the atrioventricular node, converging in the region near the coronary sinus.

4. Atrium (heart) - Wikipedia

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

   The interatrial septum has an opening in the right atrium, the foramen ovale, which provides access to the left atrium; this connects the two chambers, which is essential for fetal blood circulation. At birth, when the first breath is taken fetal blood flow is reversed to travel through the lungs.

5. Primary interatrial foramen - Wikipedia

   en.wikipedia.org/wiki/Primary_interatrial_foramen

   The septum primum, a septum which grows down to separate the primitive atrium into the left atrium and right atrium, grows in size over the course of heart development.The primary interatrial foramen is the gap between the septum primum and the septum intermedium, which gets progressively smaller until it closes.

6. 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 ...

7. Fossa ovalis (heart) - Wikipedia

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

   The fossa ovalis is a depression in the right atrium of the heart, at the level of the interatrial septum, the wall between right and left atrium.The fossa ovalis is the remnant of a thin fibrous sheet that covered the foramen ovale during fetal development.

8. Heart - Wikipedia

   en.wikipedia.org/wiki/Heart

   The septum is part of the cardiac skeleton, tissue within the heart that the electrical signal cannot pass through, which forces the signal to pass through the atrioventricular node only. [8] The signal then travels along the bundle of His to left and right bundle branches through to the ventricles of the heart.

9. Bundle of His - Wikipedia

   en.wikipedia.org/wiki/Bundle_of_His

   The bundle of His (BH) [1]: 58 or His bundle (HB) [1]: 232 (/ h ɪ s / "hiss" [2]) is a collection of heart muscle cells specialized for electrical conduction.As part of the electrical conduction system of the heart, it transmits the electrical impulses from the atrioventricular node (located between the atria and the ventricles) to the point of the apex of the fascicular branches via the ...