Blood leaves the left ventricle through the_______ valve to the aorta and its branches and is distributed throughout the body.
What is aortic
100
In the heart's conduction system, the _______ receive(s) an electrical impulse from the right and left bundle branches and relays(s) it to the ventricular myocardium.
What is Purkinje fibers?
100
What does the QRS complex represent?
What is Ventricular contraction?
200
The left atrium receives blood from the
What is pulmonary veins.
200
The base of the hear is found at approximately the level of the ______ rib(s)
What is fourth?
200
Blood flows from the left atrium through the _____- valve into the left ventricle.
What is Mitral?
200
In the heart's conduction system, the ______receive(s) an electrical impulse from the bundle of His and relay(s) it to the Purkinje fibers in the ventricular.
What is right and left bundle branches?
200
On an ECG, what is the first negative deflection seen after the P Wave?
What is Q wave?
300
The right atrium receives venous blood from the head, neck, and thorax via the______, from the remainder of the body via the ________, and from the heart via the ________.
What is superior vena cava, inferior vena cava, and coronary sinus
300
Blood flows from the right atrium through the ______ valve into the right ventricle.
What is Tricuspid?
300
The right ventricle expels blood through the ______ valve into the pulmonary trunk.
What is pulmonic
300
_______is the ability of cardiac pacemaker cells to spontaneously initiate an electrical impulse without being stimulated from another source, such as a nerve.
What is automaticity?
300
Lead records the difference in electrical potential between the _______leg and _____ arm.
What is left and right?
400
The heart is divided into _______chambers but functions as a _______ sided pump.
What is four and two
400
The thick muscular middle layer of the heart will that contains the atrial and ventricular muscle fibers necessary for contraction is the________
What is mycoardium?
400
The tricuspid valve is located
What is between the right atrium and right ventricle?
400
How do you determine whether the atrial rihytm on an ECG tracing is is regular or irregular ?
What is compare P to P Intervals?
400
Leads 1, aVL, V5 and V6 view the ______ surface of the left ventricle.
What is lateral?
500
Which side of the heart is a low pressure system that pumps venous blood to the lungs?
What is right?
500
Which side of the heart is a high pressure system that pumps arterial blood to the systemic circulation?
What is left?
500
When the left ventricle contract, freshly oxygenated blood flows through the _____ valve into ______.
What is aortic and aorta?
500
Thin strands of fibrous connective tissue extend from the atrioventricular ( AV) valves to the papillary muscle and prevent the AV valves from bulging back into the atria during ventricular systole. These strands are called _____.