The heart beat's electrical conduction starts with the SA node stimulating atrial contraction, which triggers the AV node, followed by the Bundle of His conducting the signal down the septum to cause ventricular contraction.
The electrical conduction of a heartbeat begins with the SA node stimulating atrial contraction, which then triggers the AV node. The AV node sends a signal down the septum via the Bundle of His, which then innervates the ventricular wall, causing it to contract.
| Original | SA node sends electrical impulse stmulating myocardium contraction impulse causes arta to contract, stimulates AV node at junction between atrium and ventricle AV node sends signal down septum via Bundle of His Bundle of His innervates nerve fibres in ventricular wall, causing contraction |
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| Title | steps of electrical conduction of a heart beat |
| Settings | 1,1,0 | n,n,n,n |
| Text1 | SA node sends electrical impulse stmulating myocardium contraction ... ... ... |
| Text2 | SA node sends electrical impulse stmulating myocardium contraction impulse causes arta to contract, stimulates AV node at junction between atrium and ventricle ... ... |
| Text3 | ... impulse causes arta to contract, stimulates AV node at junction between atrium and ventricle AV node sends signal down septum via Bundle of His ... |
| Text4 | ... ... AV node sends signal down septum via Bundle of His Bundle of His innervates nerve fibres in ventricular wall, causing contraction |
| Full | SA node sends electrical impulse stmulating myocardium contraction impulse causes arta to contract, stimulates AV node at junction between atrium and ventricle AV node sends signal down septum via Bundle of His Bundle of His innervates nerve fibres in ventricular wall, causing contraction |
Tags: 6_2_blood_system
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