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Anatomy CVS > Coronary Circulation > Flashcards

Coronary Circulation Flashcards

1
Q

Coronary artery branches from?

A

Ascending aorta ( they arise from right and left aortic sinuses)

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2
Q

Which arteries get filled up at diastole

A

Coronary arteries

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3
Q

Branches of RCA

A

R conus
Sinu-atrial nodal
Anterior ventricular
Posterior ventricular
Posterior interventricular artery

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4
Q

RCA supplies right ventricle except

A

Area adjoining anterior inter ventricular sulcus

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5
Q

RCA passes forward first between which 2 structures

A

Right auricle and pulmonary trunk

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6
Q

After passing the pulmonary trunk and R auricle the RCA descends through which groove

A

Anterior coronary sulcus

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7
Q

Describe the path of RCA after passing the inferior margin of heart

A

turns posteriorly and continues in posterior part of
coronary groove on diaphragmatic surface of
heart.

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8
Q

LCA first passes between which 2 structures

A

Left auricle and pulmonary trunk

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9
Q

The first division of LCA gives rise to

A

anterior interventricular + a circumflex artery.

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10
Q

Describe the path of left anterior interventricular artery

A

runs downwards in anterior interventricular
groove to apex of heart.

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11
Q

Describe the path of circumflex artery

A

circumflex artery (represents
continuation of LCA) turns round left
border of heart and continues in
posterior part of coronary sulcus to
anastomose with branches of RCA.

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12
Q

Which LCA branch is found in posterior coronary sulcus

A

Circumflex artery

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13
Q

Left marginal artery originates from

A

circumflex artery

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14
Q

reach apex, supplies both ventricles, interventricular septum + atrioventricular(AV) node (90% of cases).
Which artery

A

RCA

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15
Q

Posterior ventricular RCA supplies

A

2 in number supply
diaphragmatic (inferior) wall of right ventricle

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16
Q

Largest coronary artery

A

right marginal artery is
largest and run along lower border to reach the apex.
***Originates for anterior ventricular RCA

17
Q

Right conus branch supply

A

infundibulum + upper
part of anterior wall of right ventricle

18
Q

anterior two-third of interventricular
septum are supplied by?

A

LCA

19
Q

Most of the left atrium and Most of left ventricle are supplied by

A

LCA

20
Q

RCA supplies which atrium

A

right atrium, and part of left atrium.

21
Q

RCA supply for ventricles

A

Most of right ventricle (except area adjoining anterior

atrioventricular sulcus).
#A portion of inferior wall of left ventricle (adjacent to
posterior atrioventricular sulcus).

22
Q

posteroinferior one-third of interventricular septum is supplied by

A

RCA

23
Q

Name LCA branches

A

✓ Left conus branch.
✓ Anterior interventricular artery.
✓ The circumflex artery
✓ Left marginal artery (from circumflex)
descends along left border of heart to
reach apex.
✓ Unnamed branches to left atrium and
ventricle.

24
Q

Cardiac dominance is detriment through ?

A

artery which gives rise to posterior interventricular artery

25
Q

When is it possible to say that the cardic dominance is RIght

A

If posterior interventricular artery is a branch of RCA, coronary circulation is “right dominant”.

26
Q

Percent of right dominance

A

70%

27
Q

Percent of combined dominance

A

20%

28
Q

Which oddity has 10% dominance

A

Left

29
Q

For 65% cases SAnod is supplied by

A

RCA

30
Q

AV node and bundle of his are supplied by

A

90% of cases RCA

31
Q

Does LCA supply left branch of bundle of His

A

Yes

32
Q

Describe the pathogenesis of Angina Pectoris

A

Atherosclerosis/ thrombosis ➡️narrowed arteries ➡️Myocardial Ischemia➡️chest pain➡️progression to myocardial infarction

33
Q

Time in it for necrosis to occur in heart attack

A

20 to 30 minutes after occlusion

34
Q

Describe the space which coronary sinus occupies

A

Occupy coronary sulcus between left atrium and left ventricle

35
Q

Venus drained of the heart is mostly through

A

Coronary Sinus

36
Q

Describe the birth of a great cardiac vein

A

begins at apex of heart. It ascends in
anterior interventricular sulcus; then curves to left and
continues onto posterior surface of heart. Here, it gradually enlarges to form coronary sinus

37
Q

Where does the middle cardic vein ascend ?

A

posterior interventricular sulcus toward coronary sinus.

38
Q

Describe the location of Posterior vein of Left ventricle

A

located on posterior surface of left ventricle. It lies to left of middle cardiac vein and empties into coronary sinus.

39
Q

Small Cardiac Vein path

A

runs in posterior part of coronary
groove between right atrium + ventricle and opens into
end of the coronary sinus.

Anatomy CVS (3 decks)

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