0
What else can I help you with?
The ventricle contraction of the heart occurs iummediately after depolarization of the?
purkinje fibers
Where does ventricular contractions start?
Ventricular contractions start in the Purkinje fibers, which are specialized muscle fibers located in the walls of the ventricles of the heart. These fibers rapidly conduct the electrical signals to synchronize the contraction of the ventricles and pump blood out of the heart.
Which fibers spread the electrical signal throughout the ventricular walls?
Purkinje cells are specialized cardiac cells, whose purpose it is to spread the electrical signal from the atrioventricular (AV) node down through the right and left ventricles.
In what organ system is the purkinje fibers?
Inner ventricular walls of the heart, beneath the endocardium.
Network that stimulates the myocardium into contraction?
His bundle? or the Purkinje fibers?
What part of the conduction system of the heart wraps around in the outer walls of the ventricular?
purkinje fibers
Which structure spreads electric impulses from the interventricular septum to the Purkinje fibers in the ventricular wall?
AV Bundle
What is The order of impulse conduction in the heart from beginning to end?
The impulse starts in the right atria in the sinus node, then travels through the intratrial fibers for atrial contraction, then travels down to the the av node where it is delayed, then travels down through the bundle branches to the purkinjee fibers to the ventricular myocardium for contraction.
Where can you find a purkinje cell?
The Purkinje fibers are located in the inner ventricular walls of the heart, just beneath the endocardium in a space called the subendocardium.
The actual contraction of the ventricles of the heart is stimulated by?
Sinoatrial (SA) Node or "Pacemaker"
If a myocardial infarction damaged the left bundle branch how would this affect the spread of the action potential?
Ventricular depolarization takes longer because impulses in the left ventricle must travel from cell to cell rather than traveling down the left bundle branch and Purkinje fibers. (This will lead to a longer QRS complex on an ECG)
What are the Fibers of ventricular bundle?
The fibers of the ventricular bundle, also known as the bundle of His, are specialized cardiac muscle fibers that conduct electrical impulses from the atrioventricular (AV) node to the Purkinje fibers in the ventricles. These fibers play a critical role in coordinating the contraction of the ventricles during the cardiac cycle, ensuring effective pumping of blood out of the heart.
