Conductive Pathways
View linked note
Call Kai
Learn
Practice Test
Spaced Repetition
Match
Flashcards
Knowt Play1/9
There's no tags or description
Looks like no tags are added yet.
Name | Mastery | Learn | Test | Matching | Spaced | Call with Kai |
|---|
No analytics yet
Send a link to your students to track their progress
10 Terms
Sinoatrial (SA) node
A group of nerve cells located in the right atrium that acts as the heart's pacemaker by sending out electrical impulses.
Atrioventricular (AV) node
A group of nerve cells located between the atria and ventricles that receives the electrical impulse from the atria and relays it to the ventricles.
Bundle of His
A collection of heart muscle cells that transmit impulses from the AV node to the ventricles.
Left and right bundle branches
Divisions of the bundle of His that carry electrical impulses down through each ventricle.
Purkinje fibers
Network of nerve fibers that spread throughout the ventricles and facilitate coordinated contraction.
Fill in the Blank
Electrical impulses originating in the heart cause the cyclic contraction __________ of the muscles.
What is the function of the sinoatrial (SA) node in the heart?
It sends out electrical impulses that trigger heartbeats.
What does the AV node do after receiving an impulse from the SA node?
It transmits the impulse to the bundle of His.
What are the Purkinje fibers responsible for?
They ensure coordinated contraction of the ventricles.
The electrical impulse after the atria contracts travels to __________.
Atrioventricular (AV) node.
