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Where do nerve impulses travel from to enter the bundle branches?
Nerve impulses come through the sinus node of the heart to the bundle of His and then move into the right and left bundle branches.
What is a BBB in the heart?
This si known as a Bundle Branch Block - and refers to an anomaly of a blockage in the nerve system of the heart at the bundle branches.
The normal pattern of impulse conduction through the heart is?
SA node, AV node, AV Bundle, Bundle branches, subedocardial branches (purkinje fibers)
The correct sequence in the conduction system of the heart is?
SA node, Internodal pathways, AV node, Bundle of His, Bundle branches, Purkinje fibers.
What are bundle branches?
Bundle branches are part of the heart's conduction system, specifically responsible for transmitting electrical impulses from the atrioventricular (AV) node to the ventricles. There are two main bundle branches: the right bundle branch, which conducts impulses to the right ventricle, and the left bundle branch, which splits into two further branches to distribute impulses to the left ventricle. This coordination ensures that the ventricles contract in a synchronized manner, allowing for efficient pumping of blood. Any blockages or damage to these branches can lead to arrhythmias or other cardiac issues.
What is the correct path for the transmission of an impulse in the instrinsic condition system of the heart?
sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Perkinje fibers
Where is the right and left bundle branches located?
The right and left bundle branches are part of the heart's conduction system and are located in the interventricular septum, which separates the left and right ventricles. The right bundle branch runs along the right side of this septum, while the left bundle branch extends into the left ventricle and further divides into anterior and posterior fascicles. Both branches transmit electrical impulses from the atrioventricular (AV) node to the ventricles, facilitating coordinated contraction of the heart muscle.
What is the the correct path for the transmission of an impulse in the intrinsic conduction system of the heart?
sinoatrial (SA) node, atrioventricular (AV) node, atrioventricular (AV) bundle, right and left bundle branches, Purkinje fibers
What are the structures involved in the conduction system of the heart?
Internal pacemaker , sinoatrial(sa) node, atrioventricular (av) node , atrioventricular bundle (bundle of his ) and purkinje fibres.
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.
What are the four structures that compose the conduction system of the heart?
1. SA Node ----> 2. AV Node---> 3. AV Bundle (bundle of HIS)----> 4. Purkinje Fibers
What is The function of left and right bundle branches?
The right bundle carries nerve impulses that cause contraction of the right ventricle (the lower chamber of the heart) and the left bundle carries nerve impulses that cause contraction of the left ventricle.
