Which structure is not involved in the focusing of an image on the retina?
A. retina
B. cornea
C. iris
D. lens
E. pupil

Which of the following is considered to be a primary responsibility of a pharmacy technician? a. writing prescriptions b. greeting customers c. increasing company sales d. counseling patients

Anurse is reviewing the medical record of a client who is receiving vancomycin daily. the nurse should review which of the following laboratory results prior to administering the next dose? a. blood glucose level b. serum creatinine level c. total iron-binding count d. thyroid-stimulating hormone level

Anurse is preparing to administer lidocaine via continuous iv infusion at 4 mg/min. available is lidocaine 2 g dextrose 5% in water 500 ml. the nurse should set the iv pump to deliver how many ml/hr? (round the answer to the nearest whole number. use a leading zero if applicable. do not use a trailing zero.)