Coronaries

Question 1

Origin of RCA

Answer 1

Sinus of valsalva

Question 2

Perfusion of RCA

Answer 2

right ventricle, right atrium, left atrium, SA node, AV node

Question 3

Location of RCA

Answer 3

Travels down right coronary sulcus towards Crux of the heart

Question 4

Origin of Conus artery

Answer 4

Proximal RCA

Question 5

Location of Conus artery

Answer 5

Small, early branch of RCA

Question 6

Perfusion of Conus artery

Answer 6

Right ventricular outflow track

Question 7

Origin of SA nodal artery

Answer 7

Runs proximally off the RCA in most patients

Question 8

Location of SA nodal artery

Answer 8

Turns posteriorly below the SVC opening

Question 9

Perfusion of SA nodal artery

Answer 9

Right and left atrium, SA node

Question 10

Origin of Right ventricular branch

Answer 10

Runs proximally and laterally off the RCA

Question 11

Location of the Right ventricular branch

Answer 11

Mid RCA, runs around lateral portion of right ventricle

Question 12

Perfusion of Right ventricular branch

Answer 12

Anterior and lateral portion of right ventricle

Question 13

Origin of Circumflex

Answer 13

Branches off the Left Main

Question 14

Location of circumflex

Answer 14

Travels behind the coronary sinus and wraps around the left posterior side of the heart in the groove between left atrium and ventricle

Question 15

Perfusion of circumflex

Answer 15

Posterior portion of the left atrium and left ventricle

Question 16

Origin of obtuse marginal(s)

Answer 16

Arise from the lateral circumflex

Question 17

Location of the obtuse marginal(s)

Answer 17

Come off the circumflex at obtuse angle and travel laterally down the side of the heart towards apex

Question 18

Perfusion of obtuse marginal(s)

Answer 18

Lateral wall of left ventricle

Question 19

Origin of Left main

Answer 19

Sinus of valsalva

Question 20

Location of left main

Answer 20

Superior to the left cusp of aortic valve, runs backwards then forward around pulmonary arch

Question 21

Perfusion of Left main

Answer 21

Entire left side of heart, except posterior section of ventricular septum

Question 22

Origin of left arterial descending

Answer 22

Branches off Left main

Question 23

Location of LAD

Answer 23

Sits between left and right ventricles, running along septal groove

Question 24

Perfusion of LAD

Answer 24

Anterior and inferior portions of the left ventricle and the anterior septum along with the apex

Question 25

Origin of Diagonals

Answer 25

Run proximal to distal on the LAD

Question 26

Location of the Diagonals

Answer 26

Branch off the LAD diagonally across the anterior wall

Question 27

Perfusion of diagonals

Answer 27

Outer/lateral wall of heart

Question 28

Origin of Septals

Answer 28

Right sided branches of the LAD

Question 29

Location of Septals

Answer 29

Branch off at 90 degrees to surface of heart

Question 30

Perfusion of the Septals

Answer 30

High portion of the ventricular septum

Question 31

Origin of Atrial circumflex

Answer 31

Proximal circumflex

Question 32

Location of atrial circumflex

Answer 32

Runs along posterior left atrium

Question 33

Perfusion of atrial circumflex

Answer 33

Left atrium

Question 34

Origin of acute marginal

Answer 34

Branch off RCA from proximal to mid portion

Question 35

Location of acute marginal

Answer 35

Travels along anterior portion of the RV

Question 36

Perfusion of acute marginal

Answer 36

Inferior and diaphragmatic part of RV

Question 37

Origin of PDA

Answer 37

Branches off RCA generally, but can come off circumflex (dominance depending)

Question 38

Location of PDA

Answer 38

Runs in the posterior interventricular sulcus towards the apex

Question 39

Perfusion of PDA

Answer 39

Diaphragmatic ventricular septum

Question 40

Origin of posterior lateral branch (PLA)

Answer 40

Usually arises from RCA along with PDA, but can come off the circumflex depending on dominance

Question 41

Location of posterior lateral branch

Answer 41

Extends from the crux of heart to the left side of the heart in the atrioventricular sulcus

Question 42

Perfusion of posterior lateral branch

Answer 42

Left ventricular walk

Question 43

Origin of AV nodal artery

Answer 43

Usually from RCA but occasionally from circumflex (dominance dependent)

Question 44

Location of AV nodal artery

Answer 44

Runs through central fibrous body of the membranous atrioventricular septum

Question 45

Perfusion of AV nodal artery

Answer 45

AV node and low part of atrial septum

Question 46

Where does the RCA and LCA come out of

Answer 46

Trunk of aorta