Symptom Relief. Sips of milk help sooth symptoms of heartburn and ulcers caused by excess stomach acid production. Unfortunately, drinking too much milk causes your stomach to increase its acid production and eventually worsen your symptoms, warns Gloria Tsang, a registered dietitian for HealthCastle.com.
Pacemaker cells and Purkinje fibres in the conduction system are specialized cardiomyocytes that generate and conduct electrical impulses. The sinoatrial node (SAN), which is composed of a group of pacemaker cells, resides in the right atrium generating impulses to initiate heart contraction. The atrioventricular node (AVN) is located between the atria and ventricles, and it conducts an electrical impulse from the atria to the ventricles. Mei Xin,
The Sinoatrial Node: The Body's Natural Pacemaker. In the upper part of the right atrium of the heart is a specialized bundle of neurons known as the sinoatrial node (SA node). Acting as the heart's natural pacemaker, the SA node fires at regular intervals to cause the heart of beat with a rhythmn of about 60 to 70 beats per minute for a healthy, resting heart.