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Identify the sequence in which the earliest growth always occurs at the top-the head-with physical growth in size,weight,and feature differentiation gradually working from top to bottom.
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.
Aortic Valve
A heart valve located between the left ventricle and the aorta that regulates blood flow from the heart into the aorta.
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