Heart Flashcards

1
Q

Pericardium

A

fibroserous sac that surrounds heart

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2
Q

Fibrous Pericardium

A

outside sac
attaches to sternum via pericardiacophrenic ligament
attaches to sternum via sternopericardial ligament

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3
Q

Serous Pericardium

A

inside sac
Parietal layer
Visceral Layer: outer layer of heart known as epicardium

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4
Q

Pericardial Cavity

A

potential space between parietal and visceral layers, allows heart to move freely

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5
Q

Wall of Heart

A

Epicardium- visceral serous pericardium
Myocardium- cardiac muscle
Endocardium- smooth endothelial layer that lines heart and valves

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6
Q

Fibrous Skeleton

A

4 fibrous rings, surround orifices of valves

attachment for myocardium of atria & ventricles
provides attachment for cardiac valves
provides electrical insulation between atria and ventricles

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7
Q

Apex of Heart

A

Tip of left vetricle, in 5th intercostal space, between 5th and 6th ribs

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8
Q

Base of Heart

A

formed by left atrium, posterior side of heart

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9
Q

Right Border

A

right atrium, extending between SVC & IVC

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10
Q

Left Border

A

primarily left ventricle, some of left atrium

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11
Q

Inferior Border

A

primarily right ventricle and some left ventricle

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12
Q

Superior Border

A

jxn where great vessels enter and leave heart

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13
Q

Sternocostal (anterior) surface

A

mostly right ventircle

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14
Q

Diaphragmatic (inferior) surface

A

mostly left ventricle and partially right ventircle

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15
Q

Right Atrium

A

SVC/IVC
opening coronary sinus
fossa ovalis
tricuspid valve

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16
Q

Right Ventricle

A

tricuspid
papillary muscle/chordae tendinae
pulmonary valve

17
Q

Left Atrium

A

Foramen ovale

4 opening of pulmonary veins

18
Q

Left Ventricle

A

Bicuspid valve
papillary muscle/chordae tendinae
aortic valve

19
Q

Great Vessicle

A
SVC
IVC
Pulmonary Trunk
Right/left pulmonary veins
Aorta
20
Q

Superior Vena Cava

A

returns blood back to right atrium from areas superior to diaphragm (except from heart and lungs)

21
Q

Inferior Vena Cava

A

return blood back to the right atrium from areas inferior the diaphragum

22
Q

Pulmonary Trunk

A

Sends unoxygenated blood from right ventricle to lungs

23
Q

Right/Left pulmonary veins

A

returns oxygenated blood back to the left atrium from the lungs

24
Q

Aorta

A

sends blood to body from left venticle

25
Q

Brachiocephalic Trunk

A

gives rise to the CCA and right subclavian vein

26
Q

Tricuspid Valve

A

located between right atrium and right ventircle
chordae tendineae and papillary muscle anchor cusps of the valve

auscultate along left sternal border at 5th intercostal space

27
Q

Pulmonary Valve (right semilunar valve)

A

located between the right ventricle and pulmonary trunk

auscultate along left 2nd intercostal

28
Q

Bicuspid Valve

A

located between left atrium and left ventricle
chordae tendineae and papillary muscles anchor cusps of the valve

auscultate along apex (5th intercostal space)

29
Q

Aortic Valve (left semulunar valve)

A

located between left ventricle and the aorta

auscultate along right 2nd intercostal space

30
Q

Coronary Arteries

A

arise from the base of the aorta
right coronary artery (RCA)
left coronary artery (LCA)
Coronary Sinus

31
Q

RCA (right coronary artery)

A

supplies rigth atrium & ventricle
nodal branches supply SA and AV nodes
marginal branch of RCA is portion that supplies the right ventricle
posterior interventricular artery (right posterior descending)

32
Q

LCA (left coronary artery)

A

divides into anterior interventricular artery and crcumflex artery

anterior interventricular artery (LAD)- supplies R/L ventricles and majority of interventricular septum

Circumflex artery- supplies left atrium and ventricle, marginal branch is portion that supplies left ventricle

33
Q

Coronary Sinus

A

most of the cardiac veins drain into the coronary sinus

  • coronary drains directly into the roght atrium
  • great, middle, small cardiac veins and oblique vein of the left atrium all empty into coronary sinus
  • anterior cardiac veins and smallest cardiac veins empty directly into the right atrium
34
Q

Conducting System of Heart

A
SA node
AV node
AV bundle (oh his)
L/R bundle branch
Purkinjie fibers
35
Q

Sympathetic Innervation of the Heart

A

Sympathetic
cervicle and thoracic sympathetic trunks, innervate atria and ventricles
fxn- increase HR and contractility

36
Q

Parasympathetic Innervation of the Heart

A

innervate atria

decrease HR and contractility