Anatomy Flashcards
The left anterior descending artery supplies…
The anterior 2/3 of the interventricular septum, anterolateral papillary muscle, and anterior surface of left ventricle.
The right (acute) marginal artery supplies…
The right ventricle.
The posterior descending/interventricular artery (PDA) supplies…
The posterior 1/3 of the interventricular septum, posterior walls of ventricles, and posteromedial papillary muscle.
The SA and AV nodes are usually supplies by the…
RCA. Infarct may therefore cause nodal dysfunction (bradycardia or heart block).
In right-dominant circulation (found in 85% of individuals), the PDA arises from…
The RCA.
In left-dominant circulation (found in 8% of individuals), the PDA arises from…
The left circumflex coronary artery.
Codominant circulation is present in 7% of individuals and involves the PDA arising from…
Both the left circumflex coronary artery and the right coronary artery.
Coronary artery occlusion most commonly occurs in…
The left anterior descending artery.
Coronary blood flow peaks in…
Early diastole.
The most posterior part of the heart is the…; enlargement can cause…(due to compression of the esophagus) or…(due to compression of the left recurrent laryngeal nerve, a branch of the vagus).
Left atrium; dysphagia; hoarseness
The left circumflex coronary artery supplies…
The lateral and posterior walls of the left ventricle, as well as the anterolateral papillary muscle
