Silicon is one of the most useful elements to mankind. Most is used to make alloys including aluminium-silicon and ferro-silicon (iron-silicon). These are used to make dynamo and transformer plates, engine blocks, cylinder heads and machine tools and to deoxidise steel. Silicon is also used to make silicones.
ciliary arteries, short posterior origin, ophthalmic artery; branches, none; distribution, choroid coat of eye. circumflex artery a branch that curves around to the back of the left ventricle in the coronary sulcus, supplying the left ventricle and left atrium. circumflex femoral artery, lateral origin, deep femoral artery; branches, ascending, descending, and transverse branches; distribution, hip joint, thigh muscles. circumflex femoral artery, medial origin, deep femoral artery; branches, deep, superficial, ascending, transverse, and acetabular branches; distribution, hip joint, thigh muscles.
The left coronary artery distributes blood to the left side of the heart, the left atrium and ventricle, and the interventricular septum. The circumflex artery arises from the left coronary artery and follows the coronary sulcus to the left. Eventually, it will fuse with the small branches of the right coronary artery.s the left and right coronary arteries run on the surface of the heart, they can be called epicardial coronary arteries. These arteries, when healthy, are capable of autoregulation to maintain coronary blood flow at levels appropriate to the needs of the heart muscle.