____ blocks the parasympathetic neurotransmitter acetylcholine at the muscarinic receptors.

What is the most essential aspect of providing quality respiratory care? 1. Care being provided is indicated. 2. Care is delivered competently and appropriately. 3. Physician appropriately evaluates patient before care is initiated

a. 1 and 2 only b. 3 only c. 2 and 3 only d. 1, 2, and 3

Which of the following agents is used to disinfect?

A. alcohol B. iodine C. chlorhexidine D. all of the above