Examlex
Which childbirth method is based on the principle that childbirth should be as natural as possible and involve no medication or medical intervention;therefore,parents are urged to take responsibility for childbirth,and the use of physicians is viewed as unnecessary and sometimes dangerous?
SA Node
The sinoatrial node, often regarded as the heart's natural pacemaker, initiates electrical impulses that determine the heart rate.
AV Node
The Atrioventricular Node, a critical component of the heart's electrical system, responsible for controlling the timing of heart muscle contractions.
Bundle of His
A group of specialized heart muscle cells that are designed for electrical signaling, responsible for carrying impulses from the AV node to the heart's ventricles.
Pulmonic Valve
The heart valve that separates the right ventricle from the pulmonary artery and regulates blood flow to the lungs.
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