3 layers of the heart
pericardium, myocardium, endocardium
Pericardium
Primary function to provide lubrication, preventing friction as the heart beats
Previous
Play
Next
Rewind 10 seconds
Move forward 10 seconds
Unmute
0:00
/
0:15
Full screen
Brainpower
Read More
Myoca...
Sharp EKG study guide exam with
complete solutions
3 layers of the heart - ANSWER-pericardium, myocardium, endocardium
Pericardium - ANSWER-Primary function to provide lubrication, preventing friction as
the heart beats
Myocardium - ANSWER--responsible for the hearts ability to contract
-thick muscle layer
Myocardium - ANSWER-Chamber thickness is related to the amount of resistance the
muscle must overcome to pulp blood out of the chamber
endocardium - ANSWER--smooth, thin layer of tissue that lines the heart chambers &
valvues
-Allows blood to flow easily thru the heart
Two types of cardiac cells - ANSWER-pacemaker cells and myocardial cells
1st degree HB - ANSWER-Prolonged PR interval
2nd degree type 1 - wenkcbach - mobitz II - ANSWER-PR interval gets longer... going
going gone.
2nd degree type 2 AV Block or mobitz II - ANSWER-Dropped QRS.. PR interval normal.
3rd degree AVB = complete HB - ANSWER-P-P wave consistent; but P & QRS don't
match up
P wave - ANSWER-atrial depolarization
PR interval represents? - ANSWER-Onset (activation) of atrial depolarization to onset of
ventricular depolarization.
PR interval length ? - ANSWER-0.12-0.20 seconds
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller tuition. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $11.49. You're not tied to anything after your purchase.