dal مطحنة مورد الآلات
معنى كلمة يوريكا
AV node: [ nōd ] a small mass of tissue in the form of a swelling, knot, or protuberance, either normal or pathological. adj., adj no´dal. node of Aschoff and Tawara atrioventricular node . atrioventricular node ( AV node ) a collection of cardiac fibers at the base of the interatrial septum that transmits the cardiac impulse initiated by the...