Normal cardiac contraction is vital to maintain cardiovascular health and prevent CVDs.
Without any neural stimulation, the sinoatrial node rhythmically initiates impulses 70 to 80 times per minute. Because it establishes the basic rhythm of the heartbeat, it is called the pacemaker of the heart.
Answers & Comments
Answer:
Normal cardiac contraction is vital to maintain cardiovascular health and prevent CVDs.
Without any neural stimulation, the sinoatrial node rhythmically initiates impulses 70 to 80 times per minute. Because it establishes the basic rhythm of the heartbeat, it is called the pacemaker of the heart.