atrial artery n.
Any of the branches of the right and left coronary arteries distributed to the muscle of the atria.
- Atrial auricle
atrial auricle atrial auricle n. A small conical pouch projecting from the upper anterior portion of each atrium of the heart. Also called auricula atrii, auricular appendage, auricular appendix.
- Atrial chaotic tachycardia
atrial chaotic tachycardia atrial chaotic tachycardia n. Tachycardia originating from several foci within the atrium, often confused with atrial fibrillation.
- Atrial complex
atrial complex atrial complex n. The P wave in an electrocardiogram.
- Atrial conduction
atrial conduction atrial conduction n. See intra-atrial conduction.