Classic Hand Control. Simple and reliable operation, that is what Classic hand controls are made for. To accelerate, simply turn the ergonomic handle clockwise. To brake push the unit slightly forward. The brake can be locked while waiting in traffic. The ergonomic handle can be adjusted to accomodate individual driver needs.
The coronary arteries supply blood to the myocardium (heart tissue) itself: e.g., coronary capillaries deliver oxygenated blood (nutrients) to all of the heartâs cells.
The heart receives its own supply of blood from the coronary arteries. Two major coronary arteries branch off from the aorta near the point where the aorta and the left ventricle meet. These arteries and their branches supply all parts of the heart muscle with blood.1  Left Main Coronary Artery. 2  Right Coronary Artery. 3  Collateral Circulation.hese arteries and their branches supply all parts of the heart muscle with blood. 1  Left Main Coronary Artery. 2  Right Coronary Artery. 3  Collateral Circulation.