________ The six-digit ZIP code was introduced in the 1960s to increase the post office's efficiency in mail handling

Medications that inhibit the sympathetic nervous system are known as:

A) sympathomimetics. B) cholinergics. C) sympatholytics. D) anticholinergics.

Jaundice appears when bilirubin levels exceed

A) 4 to 6 mg/dL B) 2 to 6 mg/dL C) 10 to 12 mg/dL D) 15 mg/dL