Aorta. The aorta is the largest blood vessel in the body. It is an artery that directly arises from the heart itself and descends through the thorax and into the abdomen. All the arteries of the body, save the pulmonary arteries, stem from the aorta or one of its main branches.
Ambulance Services. Ambulance Services Overview The Office of Emergency Medical Services licenses all ambulance services that are based in or regularly operate in Massachusetts, and certifies ambulance vehicles. Ambulance services may be private for-profit enterprises, private non-profit entities, municipally run or volunteer services.
1 The level of ambulance service dispatched to each call (ALS, BLS, SCT) is based on nationally recognized emergency medical service protocols that take into account the patientâs condition, the duration of the injury or illness and the on-going care or monitoring that the patient may require. Each ambulance is appropriately staffed with state-licensed Emergency Medical Technicians (Basic and/or Paramedic) who receive on-going skills development and quality assurance guidance. 2  An Advanced Life Support Ambulance is staffed with at least one Paramedic (EMT-P) and an EMT.