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Hearts > Basics > Flashcards

Basics Flashcards

1
Q

Diastole

A

Relaxation or filling

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2
Q

Systole

A

Contraction

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3
Q

Deoxygenated blood enters ____ from _____

A

Right atrium from superior and inferior vena cavae

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4
Q

What separates right atrium and right ventricle

A

Tricuspid valve

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5
Q

What does the pulmonary artery do

A

Delivery deoxygenated blood from right ventricle to lungs to become oxygenated

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6
Q

Oxygenated blood enters _____ from _____

A

Left atrium from pulmonary veins

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7
Q

What is between the left atrium and left ventricle

A

Mitral valve

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8
Q

RCA supplies blood to

A

Posterior and inferior areas of myocardium

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9
Q

LCA branches into

A

LAD and LCX

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10
Q

LAD supplies blood to

A

Anterior walls and septum - also apex

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11
Q

LCX supplies blood to

A

Lateral free wall

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12
Q

Electrical impulse that initiates contraction begins in the

A

SA node

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13
Q

P wave represents

A

Atrial depolarization (activation of the atria)

-which is initiated by the SA node

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14
Q

PR interval represents

A

The slowing of impulse transmission at the AV node

This is where blood flows from the atria to the ventricles

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15
Q

QRS represents

A

Depolarization of the ventricles

-the ventricles contract and send blood through the (L) aorta and the pulmonary artery (R)

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16
Q

ST segment represents

A

A rest period between depolarization and repolarization (relaxation) of the ventricles

17
Q

T wave represents

A

Repolarization of ventricles

18
Q

Depressed ST segment may indicate

A

Decreased blood flow to myocardium
“Ischemia”

19
Q

Stable angina

A

Ischemia and pain at stress, but not at rest

20
Q

Unstable angina

A

Chest pain at rest and stress?

21
Q

Elevated ST might represent

A

Acute MI

22
Q

Hibernating myocardium

A

Severely, chronically ischemic tissue that is viable but appears to be non functioning and has decreased perfusion

23
Q

Stunned myocardium

A

Brief blood loss to myocardium

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