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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 |