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Explain the transmission of the electrical impulse within the heart from where it begins in the right atrium to where it ends within the ventricles?
OmarAbdulrahmanfb299...
The electrical impulse in the heart begins in the sinoatrial (SA) node and travels across the walls of the right atrium to the atrioventricular (AV) node. WHie the impulse travels the atria have time to contract. Once the impulse hits the AV node the signal is transmitted to the Bundle of His (AV bundle) and then on the the intraventricular fibers (purkinje fibers) in the septum and the outer chamber walls of the heart . This results in a simultaneous ventricular contraction.
Wiki User
∙ 12y ago
Wiki User
∙ 10y agoThat is a very good question. But it is very hard to explain without the visualization of demonstration.
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What causes the normal delay in transmission at the AV node What is the importance of this delay for cardiac function?
The delay occurs within the fibres of the AV node. It is important because it allows the atria to complete their contraction and empty their blood into the ventricles before the ventricles contract. There is a short delay (1 m/second) in transmission of the impulse to the ventricles.
Where does the electrical impulse of the heart get lost in the body?
the skin
What structure conducts the contraction impulse from the atria to the ventricles?
the purkinje fibers um no!!! wrong answer!!
How do you make your heart beat 400 times a minute?
You can't. The atrial cells, which control your heart rate, cannot fire that quickly. Even if they could, the atrioventricular node, which propagates the electrical impulse from the atria to the ventricles, does not allow the impulses to move through that quickly. There are some conditions, such as Wolff-Parkinson-White syndrome, in which there are bypass tracts around the AV node, that allow electrical activity directly down into the ventricle. In these conditions, the heart rate can approach 200 bpm - much higher than that, the ventricles begin to fibrillate, which is lethal.
Could the heart beat without the autonomic nervous system?
yes, the heart has its own pacemaker. The autonomic nervous system, while it can effect the heartbeat, cannot initiate it. That's the job of the Sinoatrial node located in the right atrium. It triggers an electrical impulse that travels down the right atrium, between the ventricles, and up the sides of the heart. This electrical impluse is what causes the heart to beat.
When does the human heart rest?
The electrical impulse reaches all the muscle tissue in the ventricles, and the ventricles contract. This electrical conduction pattern occurs approx. every 0.8 seconds.
What is the difference between synaptic and nerve impulse transmission?
Synaptic transmission is chemical, while nerve impulse or axonal transmission is electrical.
How does movement of electrical impulse relate to the contraction of the chambers of the heart?
The impulse shocks the left and right atria of the heart. This pumps blood into the left and right ventricle. The ventricles then receive the impulse and pump the blood. The movement of the electrical impulse allows the blood to move through multiple areas of the heart with only one impulse.
When an electrical impulse reaches the AV node it is slowed for a brief period of time so that?
blood can pass from the atria to the ventricles.
What is the difference between impulse conduction and transmission?
Impulse conduction refers to passage of impulse within the same cell. Where as transmission as the name implies, is concerned about passage of impulses either chemical or electrical from one cell to another.
What causes the normal delay in transmission at the AV node What is the importance of this delay for cardiac function?
The delay occurs within the fibres of the AV node. It is important because it allows the atria to complete their contraction and empty their blood into the ventricles before the ventricles contract. There is a short delay (1 m/second) in transmission of the impulse to the ventricles.
Which part of the heart delays the electrical impulse to allow for atrial emptying of blood before ventricular contraction?
The AV node slows down the impulse giving the atria time to contract before the ventricles contract.
Structure that carries the heart electrical impulse into the ventricle?
The atrioventricular (AV) node sends the signal to the AV bundle, where the wave of contraction travels from the atria to the ventricles.
When does your heart get rest?
The electrical impulse reaches all the muscle tissue in the ventricles, and the ventricles contract. This electrical conduction pattern occurs approx. every 0.8 seconds.
At what structure in the transmission sequence is the impulse temporarily delayed and why?
ATRIOVENTRICULAR (AV) NODE; THIS DELAY IS IMPORTANT BECAUSE IT ENSURES THAT THE ATRIA HAVE EJECTED THEIR BLOOD INTO THE VENTRICLES FIRST BEFORE THE VENTRICLES CONTRACT. as found in easy notecards .com
What is neural impulse?
A neural Impulse is a spike of electrical activity.
An electrical signal causes the atria to?
bubble up and popno one knowsthe signal causes the atria to contract.
