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GA > Heart > Flashcards

Heart Flashcards

1
Q

What are the first two branches of the ascending aorta?

A

Right and Left Coronary Arteries

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2
Q

What two arteries come off of the Left Coronary Artery?

A

Anterior Interventricular and Circumflex

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3
Q

What 4 arteries come off of the Right Coronary Artery?

A
  • Posterior Interventricular Artery
  • Right Marginal
  • SA Nodal Artery (60% of population)
  • NA Nodal Artery (80% of population)
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4
Q

Right Coronary Artery Supplies:

A
  • Right Atrium
  • Right Ventricle
  • Left Ventricle
  • Posterior 1/3 of AV Septum
  • SA Node (60%)
  • AV Node (80%)
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5
Q

Left Coronary Artery Supplies:

A
  • Left Atrium
  • Left Ventricle
  • Right Ventricle
  • IV Septum and AV Bundle
  • SA Node (40% of population)
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6
Q

What artery comes off of the circumflex?

A

Left Marginal

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7
Q

Right Coronary Artery is dominant what percentage of the time?

A

75%

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8
Q

What veins drain into the coronary sinus?

A
  • Great Cardiac V.
  • Middle Cardiac V.
  • Small Cardiac V.
  • Left Marginal V.
  • Left Posterior Interventricular V.
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9
Q

Where do the Anterior Cardiac Veins drain?

A

Directly into the Right Atrium.

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10
Q

What are the smallest cardiac veins and what do they drain into?

A

Vena Cordis Minimi, right atrium

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11
Q

Where is the SA Node located?

A

Subepicardium near the SVC and the upper crista terminalis

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12
Q

This is the pacemaker of the heart.

A

AV Node

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13
Q

Fibers that connect to the cardiac muscles causing contraction:

A

Purjinke Fibers

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14
Q

This node is found in the interatrial wall near the opening of the coronary sinus:

A

AV Node

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15
Q

Provides Pre-ganglionic parasympathetic, fibers and GVA fibers to the heart:

A

Vagus Nerve

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16
Q

Provide postganglionic sympathetic fibers to the heart:

A

Thoracic Splanchnic and Cervical Cardiac Nerves (T1-T4)

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17
Q

Where can the pulmonic sound be heard?

A

2nd left intercostal space, lateral to the sternum.

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18
Q

Where can the aortic sound be heard?

A

2nd right intercostal space lateral to the sternum

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19
Q

Where can the tricuspid sound be heard?

A

over lower portion of the sternum

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20
Q

Where can the Mitral sound be heard?

A

5th left intercostal space, 1/2 inch medial to the midclavicular line

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21
Q

Where is Erb’s Point and what sound can be heard there?

A

left sternal border at 3rd ICS where S2 is best heard

22
Q

What produces the first heart sound?

A

Closure of the AV Valves

23
Q

What produces the second heart sound?

A

Closure of the semilunar valves (pulmonic and aortic, S1-S2)

24
Q

It is normal to hear a third heart sound in:

A

Athletic children

25
Q

The apex of the heart is found in which intercostal space?

A

5th

26
Q

How much fluid does the pericardial cavity contain?

A

5-30mL

27
Q

Fluid leaking into the cardiac cavity due to rupture of arteries around the heart:

A

Pericardial Effusion

28
Q

Blood leaking into the pericardial cavity preventing the heart from expanding (from a stab wound):

A

Cardiac Tamponade

29
Q

What makes up the sternocostal surface?

A

Right Ventricle

30
Q

What makes up the left pulmonary surface?

A

Left ventricle and left atrium

31
Q

What makes up the right pulmonary surface?

A

Right atrium

32
Q

What makes up the inferior surface?

A

Left ventricle and part of right ventricle

33
Q

What makes up the base of the heart?

A

Left atrium facing T6-T9

34
Q

What makes up the right border?

A

Right atrium

35
Q

What makes up the left border?

A
  • Left ventricle

- part of left auricle

36
Q

What makes up the superior border?

A

Left and Right atria plus auricles

37
Q

What makes up the inferior border?

A
  • Right Ventricle

- Part of Left Ventricle

38
Q

What does the coronary sulcus separate?

A

The atria from the ventricles

39
Q

What vein lies within the coronary sulcus?

A

Coronary Sinus

40
Q

What artery and vein lie withing the posterior interventricular sulcus?

A

Posterior Interventricular artery and Middle Cardiac vein

41
Q

What vein runs with the right marginal artery?

A

Small cardiac vein.

42
Q

What muscles are in the atrium?

A

Pectinate Muscles

43
Q

What does the foramen ovale become after birth and where is it located?

A

Fossa Ovale, right atrium

44
Q

Which valve lies in between the right atrium and right ventricle?

A

Tricuspid Valve

45
Q

Which valve lies between the left atrium and left ventricle?

A

Bicuspid (Mitral) Valve

46
Q

Which heart chamber pumps blood to the lungs?

A

Right Ventricle

47
Q

Which heart chamber receives blood from the lungs and through what blood vessels?

A

Left Atrium, pulmonary veins

48
Q

What muscles are in the ventricles?

A

Papillary Muscles

49
Q

The sinus venarum contains the openings of what blood vessels?

A

SVC, IVC, and Coronary Sinus

50
Q

Which heart chamber contains the conus arteriosus?

A

Right Ventricle

51
Q

The septomarginal trabeculae is also known as what?

A

Moderator Band

GA (9 decks)

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