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EKG > Chapter 1 > Flashcards

Chapter 1 Flashcards

1
Q

Primary Heart Function

A

Deliver oxygen and nutrients to vital organs and muscle
Assists in elimination of waste products (CO2)
Supports temperature regulation

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2
Q

The Heart is

A

posterior to sternum
anterior to thoracic vertebrae
bordered laterally with lungs
tilted at an angle (downward toward the left)

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3
Q

2/3 of heart is

A

on the left side of the sternum

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4
Q

The base of the heart is

A

the superior portion of the heart, which receives great vessels

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5
Q

The Apex of heart is

A

the inferior portion, and lies against the diaphragm

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6
Q

Fibrous pericardium

A

anchors heart to the mediastinum, diaphragm, and connective tissue covering great vessels

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7
Q

Serous Pericardium (double membrane)

A

parietal pericardium (outer layer)
visceral pericardium (inner layer)

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8
Q

Epicardium

A

outermost layer

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9
Q

Myocardium

A

middle layer, cardiac tissue

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10
Q

Myocardium includes

A

intercalated discs, gap junctions, and desmosomes
allow transmission of action potential

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11
Q

Endocardium

A

innermost layer of the heart; continuous with artery linings

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12
Q

Atria

A

receive blood from pulmonary or systemic circulations; deliver blood to ventricles

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13
Q

Ventricles

A

pump blood to pulmonary or systemic circulations

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14
Q

Atrioventricular Valve

A

Tricuspid and Bicuspid (mitral) valve

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15
Q

Tricuspid Valve

A

separates right atria and ventricle

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16
Q

Bicuspid (mitral) valve

A

separates left atria and ventricle

17
Q

Semilunar Valve

A

Pulmonary and Aortic Valve

18
Q

Pulmonary Valve

A

right ventricle to pulmonary artery

19
Q

Aortic Valve

A

left ventricle to aorta

20
Q

Posterior Interventricular (PIV) Branch

A

Supplies blood to inferior aspect of both ventricles
Supplies SA and AV Node

21
Q

Left coronary artery contains

A

Left anterior descending (LAD)
Left Circumflex (LCX)

22
Q

Left Anterior Descending (LAD)

A

“Widowmaker”
Supplies anterior aspect of both ventricles

23
Q

Left Circumflex (LCX)

A

Supplies lateral aspect of left ventricle and atrium

EKG (6 decks)

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