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What is the difference between a sinoatrial node and an atrioventricular node?
Wiki User
∙ 10y ago
the SA node is located in the right atrium (one of the 4 chambers of the heart). It is where the elctro chemical conduction begins and sets the hearts pace.
The AV node is located "downstream" in the conduction system of the heart and is a node where the nervous system has input into how quickly the conduction travels.....i.e. fast heart rate (tachycardia) or slow heart rate (bradycardia)
Wiki User
∙ 10y ago
Wiki User
∙ 13y agoSino Atrial Node is the place in heart where electric impulse is generated which in heart beat
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Is sensitive tissue in the right atrium wall that begins the heartbeat called atrioventricular node?
The sino-atrial node (SA node) and, specifically the tissue of Bachmann's Bundle located within the SA node.
What node is located in the inferior portion of the interatrail septum?
the AV node.
What do the initials SA stand for in biology?
Sinoatrial node
Te sinoatrial is located where?
The sinoatrial node is impulse generating tissue in the (R) atrium of the heart. It is the natural pacemaker of the heart.
In mammals and birds there's no sinus venosus instead they have the?
Mammals and birds do not have a sinus venosus but rather a sinoatrial node. The sinoatrial node is a remnant of the sinus venosus and performs the function of a pacemaker for the heart.thank god for this site :)
How the human heart is timed?
The rhythmic sequence of contractions is coordinated by the sinoatrial (SA) and atrioventricular (AV) nodes.
What are the five areas of specialized myocardium?
sinoatrial node, right and left bundle branches, atrioventricular node, atrioventricular bundle, ventricular walls.
Nodes in the heart?
The nodes in the heart control the hearts electrical system. The nodes are known as the sinoatrial node and the atrioventricular node.
What is the sinoatrial node?
The sinoatrial node and the atrioventricular node controls the Cardiac Cycle- The Sinoatrial node is often called the Pace maker.The sinoatrial node is located in the wall of the right atrium. The Sinoatrial node emits a wave of electrical activity which reaches both Atria which causes them to contract, the wave of electrical activity is prevented from reaching the ventricles by the atrioventricular septum.Eventually the electrical activity will reach the Atrioventricular node which is situated between the atria.The Atrioventricular node conveys this along specialised muscle fibres called The Bundle of His.The bundle of his fibres release this electrical activity at the apex of the heart which causes both ventricles to contract at the same time.
What pacemaker of the heart initiates depolarization under normal conditions?
The primary pacemaker of the mammalian heart is the sino-atrial node. If the SA node fails, the atrioventricular node (AV node) takes over pacemaking.
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 tissue pairs interact to regulate the heartbeat?
You may be asking about the sinoatrial node and the atrioventricular node, two nerve bundles that work together to regulate the heartbeat.
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
Is sensitive tissue in the right atrium wall that begins the heartbeat called atrioventricular node?
The sino-atrial node (SA node) and, specifically the tissue of Bachmann's Bundle located within the SA node.
Where does the cardiac action potential originate?
In a normally functioning heart, the SA (sinoatrial) node is the pacemaker of the heart, but if it is nonfunctional then the AV (atrioventricular) node would take over. If it isn't working either then the Bundle of His can trigger contractions, and if it isn't working the Perkinje fibers can trigger contractions. Each progressive one has a slower intrinsic heart rate.
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
What is the pacemaker for the entire myocardium?
The pacemaker of the entire myocardium is the: a) Atrioventricular junction b) bundle of his c) Purkinje fibers d) Sinoatrial node
