Conduction of the heart
[DOC File]M29-1, Part 5, E
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RATIONALE: slows AV node conduction, which controls heart rate. SAFE DOSE-RANGE?: yes, 180-240 mg po daily. ACTION: inhibits transport of calcium into myocardial and vascular smooth muscle cells which then inhibits excitation-contraction coupling and contractions. SE: …
Cardiac conduction system - Health Video: MedlinePlus Medical En…
The heart's conducting system consists of the . sinoatrial node (SA node), atrioventicular node (AV node), the bundle of His, the bundle branches and the Purkinje fibers. The electrical impulse that causes rhythmic contraction of heart muscles arises in the . SA node. which is the intrinsic pacemaker of …
[DOC File]Cardiac Conduction Practice Worksheet
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• The intrinsic conduction system of the heart initiates depolarization impulses. • Action potentials spread throughout the heart, causing coordinated heart contraction. • An ECG wave tracing records the electrical activity of the heart. ** Now is a good time to go to quiz questions 3 and 4:
[DOC File]Intrinsic Conduction System
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Cardiac Conduction Practice Worksheet Author: John Girard Last modified by: John Girard Created Date: 8/4/2007 5:35:00 PM Company: Plainville High School Other …
[DOC File]Intrinsic Conduction System
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• The intrinsic conduction system of the heart initiates depolarization impulses. • Action potentials spread throughout the heart, causing coordinated heart contraction. • An ECG wave tracing records the electrical activity of the heart. ** Now is a good time to go to quiz questions 3 and 4:
[DOCX File]A4.2.3.EKGF
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• The intrinsic conduction system of the heart initiates depolarization impulses. • Action potentials spread throughout the heart, causing coordinated heart contraction. • An ECG wave tracing records the electrical activity of the heart. ** Now is a good time to go to quiz questions 3 and 4:
The Conducting System
• The intrinsic conduction system of the heart initiates depolarization impulses. • Action potentials spread throughout the heart, causing coordinated heart contraction. • An ECG wave tracing records the electrical activity of the heart. ** Now is a good time to go to quiz questions 3 and 4:
[DOC File]Cardiac Action Potential ADAM
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The activities of the conducting system can be influenced by the autonomic nerve supply to the heart. The parasympathetic nerves slow the rhythm and diminish the rate of conduction of the impulse; the sympathetic nerves have the opposite effect. ARTERIAL SUPPLY OF THE HEART . Branches ascending aorta. Right coronary artery. Left coronary artery
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Note that contraction of the heart muscle is involuntary. It happens without you thinking about it. Use the websites below to investigate the conduction system of the heart, the structures that “keep the beat.” Pay attention to how what is happening in the heart relates to the electrocardiogram (EKG). Take notes in your laboratory journal.
[DOC File]Anatomy Review: The Heart - Grey Parrot
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Second degree block results from abnormalities in conduction through the AV node with consequent failure of some of the impulses to reach the ventricles. There are two types: Mobitz I (Wenckebach): PR interval lengthens progressively in successive beats until an impulse fails to conduct to the ventricles, resulting in a ventricular pause.
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