Flashcard Set Preview
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| 1 |
What is the heart embriologically derived from?
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The primitive gut tube
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| 2 |
What are the 3 layers of the heart wall?
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1. Epicardium: Exterior layer 2. Myocardium: thick bundles of cardiac muscle 3. Endocardium:...
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| 3 |
Atrioventricular (AV) valves and semilunar valves
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1. Atrioventricular: Prevent backflow into the atria when the ventricles contract 2. Semilunar:...
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| 4 |
The myocardial or coronary circulation
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the separate artery and vein system that nourishes the heart.
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What is the "pacemaker" of the heart?
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The SA node. This is also where an impulse starts.
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| 6 |
What does the Atrioventricular (AV) node do?
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Briefly delays a heart electrical impulse so that the atria has extra time to contract. ...
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| 7 |
Describe an Electrocardiogram
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Graphically shows the moment of electricity through the heart.
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| 8 |
What regulates the heart beat at 40-80 bpm?
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The SA node initiates the impulse, and then the AV node fused with the Bundle of His to form...
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| 9 |
SInus Trachycardia and Sinus bradycardia
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1. Sinus Trachycardia: A heart rate over 100 bpm. Faster heart rates increase O2 uptake,...
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| 10 |
More on heart graphs
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note to self to look this up
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| 11 |
Arrhythmias
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An irregularity in heart beat (such as trachycardia or bradycardia). Usually occur because...
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FIrst Degree AV block and second degree AV block
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1. First Degree (Wenkbach): Conduction through AV node is slowed >.2 seconds. ...
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| 13 |
Bundle Branch Block (BBB) and Wolf Parkison White syndrome (WPWS)
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1. Impulses from the SA node spread through the atria, but are blocked at the right or left...
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| 14 |
What factors create the "lub dub" sounds of the heart?
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1. lub: the sound of the AV valves closing just prior to ventricular systole 2. Dub: the sound...
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| 15 |
Cardiac Output
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the amount of blood pumped out by each ventricle in one minute. It is the product of...
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| 16 |
WHat are the 2 big Vital Signs that show a persons cardiac health?>
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1. Arterial pulse: Normaly 70-76 bpm. 2. Blood PRessure: the pressure the blood emits against...
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| 17 |
Aneurysm, Arrhythmias
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1. Aneurysm: A weak bulge in a blood vessel that is at risk to rupture. 2. Arrhythmias:...
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| 18 |
What are three types of Arrhythmias?
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1. Fibrillations: very rapid uncoordinated shuddering of heart muscle. 2. heart block: Damage...
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| 19 |
Atherosclerosis
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Thickened hardend blood vessel walls. THe microscopic damage to the inner wall lining...
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| 20 |
Congestive Heart Failure (CHF)
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1. Congestive Heart Failure: a progressive condition in which the pumping efficiency of a weakened...
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| 21 |
Hypertension and Hypotension
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1. Hypertension: High blood pressure that is 140/90 or more. Strains the heart and damages...
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| 22 |
Murmers and myocardial Infractures
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1. Murmers: an abnormal heart sound that usually indicates a valve problem. Can result...
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| 23 |
Thrombophlbitis and Varicose Veins
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1. Thrombophlebitis: An inflammation in a vein that results from a clot formation in a vessel...
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| 24 |
Angina
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-Chest pain second to insufficient o2 supply 1. Stable: constant pain relieved by rest 2. Unstable:...
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| 25 |
Coronary Artery Disease
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Progressive narrowing of the coronary artery which can lead to ischeia.
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| 26 |
Heart Failure
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Loss of ability for heart to pump blood. 1. Right side failure: causes systematic symptoms...
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| 27 |
What are the 4 functions of the respiratory system?
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1. Oxygen-Carbon Dioxide exchange: 2.
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