Human Heart Flashcards
Where is the SA node located
on the wall of the right atrium
What is the SA node known as
The pace maker (sets the pace of cardiac activity)
What is the function of the SA Node
Generates electrical signal to go across both atria
What is the function of the AV node
It receives the signal from the SA node then will transmit the signal
What is the buddle of his
They are specialized fibers located in the middle that move electrical signals
What are purkinjie fibers
They are fast conducting fibers that initiate the contraction of the left and right ventricle cells
What happens when the heart makes the “LUB” sound
AV valve closes blood goes from atria to ventricles
What happens when the heart makes the “DUB” sound
Semi lunar valves closing blood travels from ventricles to arteries
What does an electrocardiogram do
records voltage changes produced by nerve signals
