A patient has a myocardial infarction at the apex of the heart. The occlusion by atherosclerosis occurs in which artery? A)right marginal artery B) right conus artery C) anterior ventricular artery D) circumflex artery of the left artery
Question
A patient has a myocardial infarction at the apex of the heart. The occlusion by atherosclerosis occurs in which artery? A)right marginal artery B) right conus artery C) anterior ventricular artery D) circumflex artery of the left artery
Solution
The correct answer is C) Anterior ventricular artery.
Here's why:
The heart is supplied by two main arteries: the right coronary artery (RCA) and the left coronary artery (LCA). The RCA gives off the right marginal artery and the conus artery, which supply the right side of the heart. The LCA branches into the left anterior descending artery (LAD) and the circumflex artery.
The LAD, also known as the anterior ventricular artery, supplies the front and bottom of the left ventricle and the front of the septum. The apex of the heart, which is mentioned in the question, is located at the bottom of the heart. Therefore, an occlusion in the LAD or anterior ventricular artery would affect the apex of the heart.
So, the occlusion by atherosclerosis that causes a myocardial infarction at the apex of the heart would most likely occur in the anterior ventricular artery.
Similar Questions
blockage of which of the following will lead to ischemia of the apex of heart? a) circumflex arteryb) anterior interventricular arteryc) posterior interventricular arteryd) right coronary artery
Blockage of which of the following arteries would lead to ischemia of the apex of the heart? Anterior interventricular (descending) Left circumflex Posterior interventricular (descending) Right marginal Right coronary
An elderly lady suffers a coronary occlusion and subsequently it is noted that there is a complete heart block (that is, the right and left bundles of the conduction system have been damaged). The artery most likely involved is the: acute marginal branch circumflex branch anterior interventricular (Left anterior descending) obtuse marginal posterior interventricular (posterior descending
Atherosclerosis impedes coronary blood flow by which of the following mechanisms? *1 pointA. Plaques obstruct the veinB. Plaques obstruct the arteryC. Blood clots form outside the vessel wallD. Hardened vessels dilate to allow the blood to flow through
Sudden occlusion of the anterior interventricular branch of the left coronary arterywill lead to infarction of this part of the heart wall.A. Part of the right atriumB. Anterior two -third of the interventricular septumC. Le ft atri umD. Posterior on e- thi rd of the interventricular septumE. Atrioventricular nod e
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.