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electrical conductio
electrical conduction of heart
Question | Answer |
---|---|
name the two specialized structures that act as pacemakers for the heart | SA Node AV Node |
SA node initiates contractions by | depolarization |
Electrical signal spreads across | atria |
electrical signal crosses atria causing them to... | contract |
electrical signals crosses atria causing them to contract before reaching the | AV node |
what starts at the apex ventricle | contractions of ventricles |
conducting fibers are located in | AV Node |
conducting fibers must exit AV node to become | AV bundles |
specialized conducting cells transmit signal down to ...... to initiate contractions in AV node | apex |
AV bundle is formed from | conducting fibers in AV node |
AV bundle splits into | right & left bundle branches |
bundles branches split into | purkinje fibers |
purkinje fibers are located in | wall of ventricles |
mini ateries that branch out into capallaries | artrioles |
transfer stations between arteries and veins | capallaries |
the smallest vein components that suck blood out of the capillaries | venules |
what is the name of the structure where the blood is located into the tunica interna | lumen |
the smaller the diameter of the blood vessel, the ...... it is for blood to move through it | harder |
capillaries are made of what kind of tissue | epithelial tissue |
the heart is what kind of muscle | cardiac muscle |
.... pumps blood through body | contractions |