EKG quiz 2

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Quiz By : memokash1

EKG quiz 2
1.	What does the P wave represent?
	right atrial contraction only left atrial contraction only contraction of both left and right atria
2.	What atrioventricular valve is found on the right side of the heart?
	mitral valve aortic valce pulmonic valve tricuspid valve
3.	Do both the left and right ventricles contract at the same time?
	yes no
4.	Which valve is located between the left atrium and the right ventricle?
	aortic valve tricuspid valve pulmonic vavle mitral valve
5.	Why is there a flat line afte the P wave?
	The heart ceases contraction. blood is flowing from the left atrium into the right ventricle. Blood is flowing from the right atrium into the right ventricle. There is absence of electrical activity in the heart.
6.	What is rate of SA node depolarization?
	60-80 beats per minute 40-60 beats per minute 20-46 beats per minute
7.	What ion is involved in SA node depolarization?
	sodium calcium chloride pottasium
8.	What ion is involved in AV node depolarization?
	sodium calcium pottasium chloride
9.	Depolarization is ________ throught the AV node because of the presence of calcium ions.
	slower faster
10.	Where does the ventricular conduction system originate from?
	purkinje fibers SA node His bundle right and left bundle branches