Question

The branches into the Circumflex artery and left anterior descendary artery
A. Left main coronary artery
B. Right marginal artery
C. Posterior descendary artery
D. None of these

Answer 1

Hint:
Before we proceed into the problem, it is important to know the definitions of the Circumflex artery and left anterior descendary artery.
The circumflex artery is a common site for cardiovascular (heart) disease. It's the smallest of the major arteries that travel from the heart to other parts of the body, and it carries more blood than any other artery. This arterial branch can become blocked by cholesterol or plaque build-up, which can lead to a variety of problems including heart attack and stroke.

Complete answer:
The branches into the Circumflex artery and left anterior descendary artery are as follows: Circumflex artery: Branches into right coronary arteries, left circumflex coronary arteries, and the ulnar collateral branch of the brachial plexus.
Left anterior descending artery (LAD): Begins from a common trunk in your neck near your Adam's apple directly below your clavicle.
Blood is supplied to the front of the left side of the heart by the left anterior descending artery, which arises from the left coronary artery. The left coronary arteries circumflex artery splits off and surrounds the heart muscle. The lateral side and rear of the heart both receive blood from this artery.
Therefore, the branches into the Circumflex artery and the left anterior descendary artery is the left main coronary artery.

Option ‘A’ is correct

Note:
The circumflex artery supplies oxygenated blood to the brain, heart, and other vital organs in the head. The left anterior descending artery provides a route for laterally flowing cerebrospinal fluid (CSF) from the ventricles of the brain to the spinal cord.