Lecture 15 DA Flashcards Preview

Anatomy: Viscera and Visceral Systems > Lecture 15 DA > Flashcards

Flashcards in Lecture 15 DA Deck (18):
1

What artery sits in the anterior left AV groove?

Left circumflex artery.

2

What artery sits in the anterior right AV groove?

Right coronary artery.

3

Where do septal branches originate from?

They are diagonal branches that come off the left descending artery.

4

What are the most important coronary arteries?

The right coronary artery, those supplying the left ventricle.

5

What does the right coronary artery become?

The posterior descending artery.

6

Why are arteries epicardial?

They lie outside the heart so that they aren't squeezed by it.

7

What are marginal arteries?

They are branches off both circumflex arteries (ie. left circumflex and right coronary).

8

Where does the sinus node artery branch off from?

Right coronary artery.

9

Where does the posterior descending artery originate from?

70% from the right coronary, 30% from the left.

10

What is a third branch off the left coronary artery?

The intermediate artery.

11

What are some of the common arteries used for catheter insertion in an angiogram?

Mostly the femoral. Most common used to be the brachial. Radial is also still used.

12

How does the right coronary artery supply the left ventricle?

It supplies it posteriorly.

13

What are angiograms most often used for?

To find myocardial infarcts, which is a major killer.

14

How do myocardial infarcts occur?

They occur from atherosclerotic plaques of cholesterol, which are covered by endothelium. If ruptured, they become a thrombus and cause thrombosis.

15

What is one way to combat thrombi?

Using thrombolytics.

16

Where do infarcts most commonly occur?

Anteriorly - left anterior descending artery.
Posterior/laterally - circumflex artery.
Inferiorly - right coronary artery.

17

Do broken thrombi cause further infarcts?

No, for some reason they dont.

18

What is percutaneous coronary intervention?

A balloon is inflated using a catheter to squeeze the infarct, and a stent is used to hold it in place.