________ can be both an expression of comfort and a way of controlling people

The normal ST segment is

A) depressed below the isoelectric line. B) elevated above the isoelectric line. C) at the isoelectric line. D) both above and below the isoelectric line.

Which is a sign of B-complex vitamin deficiencies?

A) Enlarged papilla B) Recession C) Cracks in the corners of the mouth D) Aphthous ulcers