What is the number of equivalents of the base PO43-?

Choose the correct statement regarding proper specimen collection for coagulation testing from the following choices:

a. The tube needed for coagulation testing should be the first tube drawn. b. It is acceptable to fill the sodium citrate tube halfway in a polycythemic patient for coagulation testing. c. When drawing blood from a catheter, care must be taken to avoid heparin contamination. d. Butterfly needles should not be used when drawing coagulation tubes.

Agents causing stimulation of the parasympathetic nervous system are

a. cholinergic. b. anticholinergic. c. adrenergic. d. parasympathomimetic.