Latin Word of the Week (February 28, 2009): AD To, Toward. The prefix AD, which in Latin means to or toward, occurs in literally hundreds of common English words. In many of those words it retains the spelling AD, in many others the D assimilates to the first letter of the root word. For example, the word assimilate which I just used.
The most probable mechanism, responsible for fibril length and diameter increase, is the fusion of fibrils; fusion may occur at the tapered ends through lateral association, giving rise to longer fibrils and this is considered the former fusion to take place.
In atrial fibrillation (AFib), the heartâs two small upper chambers (atria) donât beat the way they should. Instead of beating in a normal pattern, the atria beat irregularly and too fast, quivering like a bowl of gelatin. Itâs important for the heart to pump properly so your body gets the oxygen and food it needs. What Is Atrial Fibrillation? Cardiovascular Conditions Your heart has a natural pacemaker, called the âsinus node,â that makes electrical signals. These signals cause the heart to contract and pump blood. With atrial fibrillation, random electrical activity interrupts the normal conduction rhythm. This prevents the atria from properly contracting.