Orthodontic costs vary greatly around the country. An average case fee is about $5000-$6000. Most offices will offer a variety of payment plans. An in house finance with no inâ¦terest typically will only finance the length of treatment with a 20-25% down payment. Average length of treatment is 18-24 months. Making your monthly payment $200-$300.
Under normal conditions, electrical activity is spontaneously generated by the SA node, the physiological pacemaker. This electrical impulse is propagated throughout the right atrium, and through Bachmann's bundle to the left atrium, stimulating the myocardium of the atria to contract. The conduction of the electrical impulse throughout the atria is seen on the ECG as the P wave. As the electrical activity is spreading throughout the atria, it travels via specialized pathways, known as internodal tracts, from the SA node to the AV node.
Irregular heartbeats are generally caused by improper signaling within the electrical system of your heart. To better understand heart palpitations, itâs important to understand how the heart functions. The heart is a muscle. Muscle cells contract when they receive electrical signals from other cells. In your skeletal muscles, like your biceps, the electrical signals that tell the muscle fibers to contract come from your nervous system. The muscle cells of the heart are coordinated more closely.