Cardiac muscles don't contract in unison, if you listen to your heart beat you should hear two distinctive thumps (1 for the atria, 1 for the ventricles). I believe the structure you're looking for is the Sinoatrial Node (SA node) which is a bundle of nerves in the upper part of the right atrium, also known as the 'pace maker'. The electrical impulse from the node triggers a sequence of electrical events (from the SA Node to the A(trio)V(entricular) node to the Purkinje fibers) which are the cause of the beating/contracting
SA node
SA Node
arota
SA node '' sets the pace for the heart
The knot of modified myocardium that sets the pace of the heart is the sinoatrial (SA) node. The SA node is on the wall of the right atrium.
the sinoatrial node; located in the right atrium.
let's
A pace-setter or pacemaker. Also known as a 'rabbit'.
The cast of Betty Sets the Pace - 1920 includes: Muriel Ostriche as Betty
isn't it just the sino-atrial node?
Stroke
speed of heart beat is set by the flow of blood through your heart.if you walk its normal and when you ran its fast.
The SA node (Sinoatrial node) sets the pace for the heart as a whole because no other region of the conduction system or the myocardium has a faster depolarization rate. For this reason, it is the heart's pacemaker.
The timing device used in microprocessors that sets the pace for executing instructions is called the clock. Often, it is a crystal oscillator.
Lighter weights, but more sets. Reps should be at a good pace.