A&P II Lab review Circulatory system (Part 2)
Intercalated discs in the heart muscle cause what?
The cells to contract together at the same time.
Heart muscle cells have how many nucleus?
What is unique about the cells into the heart muscle?
The heart muscle cells are ___________.
What node initiate heart beat and determines heart rate?
The SA Node
Why is the electrical system in the heart unique?
It makes the heart beat with out the help of the CNS
Give the electrical pathway of the heart, starting with the SA node.
AV Bundle (Bundle of His)
R & L bundle branches
What do EKG's show us?
Electrical activities of the heart
What do EKG's not show us?
In an EKG reading, what does the P wave show?
In an EKG reading, what does the QRS wave show?
Atrial repolarization masked by vent depolarization
In an EKG reading, what does the T wave show?
If the heart beats above 100 for prolonged periods of time it is known as what?
If the heart beats below 60 bpm for prolonged periods of time it is known as what?
At what point would you use paddles as indicated by an EKG?
What would the diagnosis be for this pt.?
What would the diagnosis be for this pt?