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What makes the heart beat? Your heart Keep hitting every moment of the day and night without realizing it. Has the ability to change his personal speed and rhythm for a while when studying or anxious in sports, but quickly returns to an easy pace without deliberate control. The Cycle of Contracting and Relaxing the heart Muscles are generated by electronic impulses that are checked. the conduction system of the heart This can be influenced by fever, physiological exercise, hormonal composition, etc.
Five components of the guideline
The conduction system of the heart controls the pumping effect, leading to the delivery of blood to the various organs and tissues of the body. This conduction system consists of a group of special cells identified by the walls of the the heart muscles that send electronic impulses and allow blood to be pumped around. the heart muscle to contract.
It is composed of the following parts
SA (Synatrial) button.
- The SA node is located in the upper right video room (Atrium). the heart .
- It activates a pulse that causes depolarization and generates an action potential, an electronic event that represents the two upper video rooms (ATRIA) and the AV node.
- It improves the knock speed the heart .
AV (Atrioventricuric) button.
- This group of varacelles is located between the chest and the room.
- It passes electronic impulses from the chest. From the chest, the action potential is briefly lifted by contraction and passed to the AV-bundle.
AV-bundle
- Electrical connection between atrium and inferior chamber the heart (ventricle) through the AV convention.
- This allows action potentials from the atrium to separate the ventricles and integrate the AV bundle with the ventricular branches.
Bundle branches
- They transport action potentials to it the heart International shot.
Porkin Fibers
- These fibers depart from the intervention partition to your apex heart and continue through the heart room muscles (myocardium).
- They pass electronic impulses to the ventricular muscle cells.
- From the electronic action (action potential), when the contractile cells are activated in a coordinated manner, a mechanical action (muscle contraction) occurs, actually one single flash.
How Does the Guidance System Work?
The conduction system of the heart works this way:
Step 1: Pulse Generation from a Pacemaker
The SA node is colloquially referred to as a natural pacemaker because it fine-tunes the pace of the heart. It is where myocardial contraction occurs due to impulses that force the right and left atria to contract and pump blood into the heart cavity.
Step 2: Impulse Conduction from the AV Node
Electronic signals propagate from the atria to the AV node, a group of cells located between the atria.
Step 3: Impulse conduction in the AV bundle
The electron pulse then travels along the AV bundle, which divides into right and left branches.
Step 4: Impulse conduction in Purkinje fibers
Action potentials then propagate through Purkinje fibers, causing contraction of the left and right ventricles. The powerful contraction of the ventricles pumps blood from the right ventricle to the non-ventricle and from the left ventricle to the rest of the body. After the ventricles have contracted, electronic impulses from the SA node restart the cardiac cycle, causing the ventricles to relax and fill with more blood from the atria.
This video explains in detail how the electrical connections are made. system of the heart work：
Cardiac Conduction System and Its Relationship to ECG
The action of the conduction system of the heart The electronic impulses of the heart are recorded by an electrocardiogram (ECG), which displays the electronic impulses of the heart. It is a useful control tool the heart ’s conduction system Can be used to detect abnormalities in function.
Comparison of the heart and ECG
Acceleration of the ventricles begins at the bottom (apex) of the heart heart and moves upward, pushing blood into the aorta above or over the ventricles.
The heart The electrical force correlates with the trajectory of the ECG wave.
- The P wave indicates atrial depolarization corresponding to atrial contraction.
- Complex ventricular depolarization indicates that it corresponds to ventricular contraction.
- T wave indicates ventricular repolarization, which corresponds to ventricular relaxation.
Problems that may go wrong
Sometimes, the heart It causes irregular heartbeats and arrhythmias. This can occur when
- The sinus node (SA) changes its own pace or rhythm.
- The conduction system of the heart is interrupted.
- Certain parts of the heart Tissue takes over the SA node and becomes another “pacemaker”.
Arrhythmias cause heart pemilia, and other symptoms such as dizziness, shortness of breath, fainting, etc.
An EKG evaluation may be needed to control the rhythm. heart Field Your heart rate will be recorded during this painless test. heart Power is supplied by inserting a small sticker placed on the chest. Abnormal electronic rhythms may or may not require treatment and may require medication or surgery.
To learn more about Hartman, watch this video. conduction system And the case of his EKG.
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