cvs anatomy Flashcards
1
Q
What are the four main branches of the coronary arteries?
A
- Right Coronary Artery (RCA)
- Left Coronary Artery (LCA)
- Posterior Descending Artery (PDA)
- Left Anterior Descending Artery (LAD)
- Circumflex Artery (Cx)
- Right Marginal Artery
2
Q
What does the Right Coronary Artery (RCA) supply?
A
- Posterior 1/3 of interventricular septum
- Inferior wall of left ventricle
- Posterior walls of both ventricles
- SA & AV nodes (in most people)
3
Q
What does the Posterior Descending Artery (PDA) supply?
A
- Posterior 1/3 of interventricular septum
- Inferior wall of left ventricle
- Posterior walls of both ventricles
4
Q
What does the Right Marginal Artery supply?
A
- Right ventricle (lateral wall)
5
Q
What does the Left Coronary Artery (LCA) supply?
A
- Anterior 2/3 of interventricular septum
- Anterior wall of left ventricle
- Part of right ventricle
6
Q
What does the Left Anterior Descending Artery (LAD) supply?
A
- Anterior 2/3 of interventricular septum
- Anterior wall of left ventricle
- Part of right ventricle
7
Q
What does the Circumflex Artery (Cx) supply?
A
- Lateral wall of left ventricle
- Left atrium
- Posterior left ventricle (if left-dominant)
8
Q
Fill in the blank: RCA gives _______ & Marginal for the right side.
A
PDA
9
Q
Fill in the blank: LCA gives _______ & Circumflex for the left side.
A
LAD
10
Q
True or False: The RCA supplies the SA & AV nodes in most people.
A
True
11
Q
What is a quick memorization trick for remembering the branches of the RCA and LCA?
A
- “PDA & Marginal” → RCA (Right side)
- “LAD & Cx” → LCA (Left side)
