Ted Cassidy, the uncredited narrator of the show's opening credits, also did the Hulk's growls for the first two seasons. When he died in 1979, dubbed animal growls were used, in addition to growls by Charles Napier.
An anesthesiologist assistant (AA) is a non-physician anesthesia provider qualified by advanced education and clinical training to work cooperatively with an anesthesiologist in developing and implementing the anesthesia care plan.
Anesthesiology: An anesthesiologist is a physician who specializes in the administration of anesthesia for pain relief, and the care of patients before, during, and after surgery. The anesthesiologist monitors vital organ functions including heart rate, blood pressure, breathing, and blood-oxygen saturation during surgery.