Cardiovascular Systems Flashcards

1
Q

Atria

A

Receiving chambers of heart

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2
Q

Ventricle

A

Chambers of heart below the atria. Thick and muscular

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3
Q

Coronary arteries

A

Arteries that supply blood to the heart

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4
Q

Pericardium

A

Outer, fibrous layer of heart

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5
Q

Myocardium

A

Muscular wall of heart located between pericardium and endocardium

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6
Q

Endocardium

A

Inner, smoother lining of the heart

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7
Q

Sinoatrial node

A

Specialized muscle fibers that acts as pacemaker of the heart located at entrance at right atrium

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8
Q

Atrioventricular node

A

Receives electrical signals from SA node and transmits to rest of heart. Controls heart rate. Is located in wall of right atrium at the interstitial septum.

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9
Q

Ischemia

A

Inadequate oxygen supply to tissues due to lack of blood flow

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10
Q

Angina Pectoris

A

Cheat pain, myocardium becomes ischemic caused by coronary artery narrowing or spasm resulting in ischemic heart disease

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11
Q

Emboli

A

Thrombus breaks away from wall and travels through the blood stream

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12
Q

Aortic aneurysm

A

Localized pathologic enlargement of the aorta

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13
Q

AV Block

A

Progressively longer PR interval that can lead to atria and ventricles beating independently of each other

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14
Q

Arrhythmia

A

Abnormal beating or rhythm of heart

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15
Q

Atrial fibrillation

A

Irregularly irregular heart rate with no discrete P waves

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16
Q

Ventricular fibrillation

A

Completely erratic heart rhythm with no identifiable waves

17
Q

Coronary thrombosis

A

A blockage of the flow of blood to the heart caused by a blood clot in a coronary artery

18
Q

Myocardial infarction

A

Acute thrombosis due to rupture of atherosclerotic plaque of coronary artery

19
Q

Heart failure

A

Progressive, chronic condition that effects pumping of heart. Dyspnea, orthnopnea, fatigue, RALES, Pitting edema and jugular venous distension

20
Q

Cardiomyopathy

A

Choronic disease of the heart muscle (dilated, hypertrophic, and restricted cardiomyopathy)