Coronary arteries/vein Flashcards

1
Q

What is origin of right coronary artery?

A

Right aortic sinus

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2
Q

What is distribution of right coronary artery?

A

Right atrium, SA and AV nodes, posterior portion in IV septum

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3
Q

What is origin of artery to sinoatrial node?

A

60% from right coronary artery

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4
Q

What is distribution of artery to sinoatrial node?

A

SA node and pulmonary trunk

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5
Q

What is origin of right marginal artery

A

Right coronary artery

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6
Q

What is distribution of right marginal artery?

A

Right ventricle and apex

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7
Q

What is origin of posterior interventricular (posterior descending) artery?

A

Right coronary artery

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8
Q

What is distribution of posterior interventricular artery?

A

Right and left ventricles, IV septum

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9
Q

What is origin of artery to AV node?

A

right coronary artery (80% of time)

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10
Q

What is distribution of artery to AV node?

A

AV node

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11
Q

What are the branches of the right coronary artery?

A

Artery to SA node, right marginal, posterior interventricular, artery to AV node

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12
Q

What is the origin of the left coronary artery?

A

Left aortic sinus

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13
Q

What is distribution of left coronary artery?

A

Left atrium and ventricle, IV septum, AV bundle & AV node

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14
Q

What is origin of artery to sinoatrial node (L)?

A

40% from circumflex branch

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15
Q

What is distribution of artery to sinoatrial node (L)?

A

SA node and left atrium

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16
Q

What is origin of anterior interventricular (left anterior descending)?

A

Left coronary artery

17
Q

What is distribution of anterior interventricular (LAD)?

A

Right and left ventricles and IV septum

18
Q

What is origin of circumflex artery?

A

left coronary artery

19
Q

What distribution of circumflex artery?

A

Left atrium and ventricle

20
Q

What is origin of left marginal artery (if present)?

A

Left circumflex

21
Q

What is distribution of left marginal artery?

A

Left border of left ventricle

22
Q

What does the right coronary artery supply (7)?

A
Right atrium
Most of right ventricle
Diaphragmatic surface of left ventricle
Posterior 1/3 of AV septum
SA node in 60% of people
AV node in 80% of people
23
Q

What does the left coronary artery supply (4)?

A

Left atrium
Most of left ventricle
Anterior 2/3 of AV septum (including AV bundles)
SA node in 40% of people

24
Q

Where does most of the blood from the coronary circulation return?

A

Returns to right atrium through either the coronary sinus or by a pair of small, anterior cardiac veins

25
Q

What veins does the coronary sinus receive?

A

Great cardiac vein, middle cardiac vein, left marginal vein, left posterior ventricular vein, small cardiac vein.
Does NOT receive: anterior cardiac vein and smallest cardiac veins

26
Q

What is the direct continuation of the great cardiac vein?

A

Coronary sinus